EP0223871B2 - 180 Degrees hinge - Google Patents

Abstract

The 180 DEG -hinge consists of a first block (16) fastened to the cupboard housing (14) by means of screw bolts and of a second U-shaped block (24) engaging round the first block (16) and fastened to the door leaf by means of clamping-pin devices (20). The second block (24) is pushed into a recess (18) made in the rebate region (22) of the door leaf (12) and at the same time surrounds the recess edges (26, 28). The clamping-pin devices (20) extend beyond the recess region into the corner regions (30) formed by the rebate (22) and thereby retain the second block (24) in the recess (18). According to the invention, for use on cupboards in a row, the axis of rotation of the hinge (10) is located outside the corner region (30) formed by the rebate (22) of the door leaf (12), so that the hinge bearing bolt (104) is at a distance M in front of the outer face (78) of the door leaf which corresponds to the distance N between the bearing-bolt centre and the tangent (80), parallel to the outer face (78) of the door leaf, to the bearing part projecting furthest (end face 82). <IMAGE>

Description

The invention enters a 180 ° hinge for a sheet metal cabinet, in particular a control cabinet, consisting of a first bearing block attached to the housing of the sheet metal cabinet and a second U-shaped bearing block encompassing the first bearing block, attached to the door leaf of the sheet metal cabinet by means of clamping pin devices, the Door leaf has a bevel directed towards the housing, and the bearing block connected to the door leaf is inserted into a notch in the region of the bevel of the door leaf and thereby encloses the notch edges, and the clamping pin devices extend beyond the notch region into the corner regions formed by the bevel and thereby hold the bearing block inserted into the door notch in this notch, the clamping pin devices being formed by a pin which penetrates both bearing blocks, the encompassing bearing block having a bore for the clamping pin device gene.

Such a 180 ° hinge is described in DE-U-77 07 165.9. FIG. 7 of the applicant's (but not prepublished) European patent application 85114300.8 (EP-A-0222031) shows a similar, U-shaped bracket fixed in a notch of a door leaf.

The advantage of this fastening with the aid of clamping pin devices is that a welding process for fastening the second bracket to the door leaf or the use of fastening screws for the door leaf (the latter is used in the aforementioned European application 85114300.8) is not necessary, while the first is fastened Bockes can be worked either with a cap screw or with a screw bolt or even stud bolt (welding bolt). The known 180 ° hinge arrangement with clamping pin arrangement, however, requires quite cumbersome work to remove the door, for example in order to be able to better access the interior of the control cabinet for cabinet wiring. Either the screw connections between the cabinet housing and the multiple hinges of the respective door must be unscrewed, which is quite cumbersome, or the bolts of the clamping pin devices of the different hinges are pulled out, which in turn leads to the hinge falling apart. The subsequent assembly is then very difficult, especially when e.g. B. three hinges must be installed at the same time, because of the necessary precise alignment of the individual hinge parts.

An even more serious disadvantage is that the known 180 ° hinge can only be used with individual cabinets, but not with row cabinets.

Hinges for a door opening angle of 180 °, which can also be used in row cabinets, are also known per se, see for example DE-A-32 46 398 by the applicant. The one shown in this document However, a row cabinet hinge requires space next to the door leaf, corresponding to the basic width of the two hinge blocks. For this reason, when using such a 180 ° hinge for in-line wardrobes, the door leaf must be a little more than the basic width of the hinge narrower than the cabinet body, this distance also on the hinge side facing away from the hinge and also above and below on for visual reasons Door leaf was provided.

In contrast, in the case of the 180 ° hinge of the type mentioned at the outset, the door leaf is essentially surface-covering with respect to the cabinet body, with only a narrow edge of 1 to 3 mm remaining to accommodate manufacturing tolerances.

DE-A-18 12 808 shows a 180 ° hinge for kitchen cabinets. The one hinge part screwed to the door leaf forms a U-shaped region in which the other hinge part which is screwed to the door frame is adapted, whereby a hinge pin extends through both hinge parts. The two hinge parts are designed so that the axis of rotation of the hinge comes to lie in front of the outer surface of the door leaf, so that apparently several cabinets can also be arranged side by side here (row cabinet application) without the opening being obstructed by 180 °.

The disadvantage here is that the two hinge parts can only be attached to the door leaf or door frame by means of screw connections. This document does not provide any hints as to how such a hinge can be used for a sheet metal cabinet, in particular if clamping pin devices are to be used.

The object of the invention is to improve the 180 ° hinge of the type mentioned in that it also is applicable to in-line cabinets. This means that it can be attached to the door leaf without making screw holes, but in particular it is also possible to change the hinge type as required (e.g. replacement of a 180 ° hinge for single cabinets with a 180 ° hinge for row cabinets) without that any changes have to be made to the door leaf or the cabinet housing, whereby right-left usability should also be guaranteed. In addition, the known construction should also be improved in such a way that the hinge part to be fastened to the door leaf by the clamping device can be inserted in a more aligned manner in the door leaf notch before assembly of the clamping device, whereby assembly is made considerably easier.

The object is achieved in that for row cabinet use the axis of rotation of the hinge lies outside the corner area formed by the folding of the door leaf in such a way that the hinge pin lies by a dimension M in front of the outer surface of the door leaf, which is the distance N between the center of the bearing pin and that parallel to the outer surface of the door leaf corresponds to the tangent to the most protruding bearing part, the bore of the encompassing pedestal being such a laterally opened bore or incision for the clamping pin devices that pivoting the clamping pin out of the area of this pedestal is made possible for opening the door.

This ensures that the hinge can also be used in row cabinets. In particular, a hinge of known type, which can only be used for individual cupboards, can be replaced by the hinge according to the invention without changes to the cupboard housing or door leaf - and vice versa. To further simplify the assembly, in particular the replacement, according to another further development According to the invention, the U-shaped bearing block for enclosing the vertical door leaf notching edge in the web area of the U form a first groove, or for enclosing the horizontal door leaf notching edges each form a second groove lying in the leg area of the U. These features result in simple assembly and disassembly and replacement of both 180 ° hinges for single cabinets and 180 ° hinges for row cabinets without changes to the door leaf or cabinet housing. By using the second groove to enclose the horizontal door leaf notches, the corresponding bearing block is anchored in the door leaf notch with a correspondingly close fit of the groove with respect to the door leaf thickness in such a way that when the clamping pin devices are pulled out for the purpose of removing the door leaf from the cabinet housing, the bearing block is in the notch remains and thereby the subsequent reassembly of the door leaf on the cabinet housing is facilitated, for which purpose the simultaneous alignment of the several bearing blocks with respect to the bearing blocks fastened to the cabinet housing is necessary in order to be able to subsequently insert the pin devices again.

The hold of the bearing block inserted in the door leaf notch is further improved if, according to yet another development of the invention, one side of the second groove is formed by the blunt end of a wedge that rises in the push-on direction. This measure eliminates the need to design the groove with an accurate, tight press fit with respect to the door leaf, because the described wedge-shaped projections result in a clip-like arrangement, which results in a very stable attachment of the second bracket in the notch, even if the Door leaf notch edge still has some play in the respective groove.

The hinge with a clip effect designed in this way would also be suitable for single cabinet applications in which the axis of rotation of the hinge lies within the corner area formed by the folding of the door leaf and the clamping pin fixed in the second bracket simultaneously represents the axis of rotation of the hinge.

When used for in-line cabinets, on the other hand, it is necessary that the axis of rotation of the hinge lies outside the corner formed by the fold of the door leaf, the hinge brackets, if they have a positioning width B, which is considerably larger, in particular twice as large as the diameter D of the Hinge pin, according to another embodiment of the invention, have a dimension M that is smaller than half the adjustment width B.

In the hinge embodiment for in-line cabinets, it is advantageous if the hinge axis is formed by a first bearing pin which is arranged in corresponding coaxial bores in the legs of the U-shaped bearing block or in the bearing block encompassed by the latter, and the clamping pin devices instead of a single pin are formed by two screws, in particular grub screws, which are screwed into the legs of the second (U-shaped) bearing block threaded holes. Grub screws result in a particularly high vibration resistance because they can be jammed in the threaded hole by means of appropriate thread design.

The dismantling of the door leaf from the cabinet housing is done in this embodiment either by loosening the corresponding bracket holding screws, but this can be time-consuming and cumbersome due to the poor accessibility of these screws, or in that the clamping pin devices are pulled out again, or in that the Grub screws are unscrewed.

Usually it will be a good idea to press the bearing pin firmly in, so that only the possibility of removing the grub screws remains. In this case the trestle attached to the door frame will remain there.

The arrangement of the grub screws instead of a simple plug to be inserted provides greater security against unauthorized dismantling.

Since in the row cabinet application in focus here, the encompassed bearing block rotates around a bearing axis that does not coincide with the axis of the clamping pin device, the encircled bearing block is designed in such a way that it is not prevented from pivoting around the bearing pin, even if one chooses a particularly favorable embodiment, in which - similarly to the embodiment mentioned at the beginning - the clamping pin devices are formed by a pin which is advantageously angled at its end in order to be able to pull it out and insert it more easily, the pin penetrating both bearing blocks. However, since the encompassed pedestal has such a laterally open bore for the clamping pin devices that pivoting the clamping pin out of the area of the encircled pedestal to open the door is not a hindrance. The resulting weakening of the cross section of the encircled pedestal is in harmless in many cases.

You can also screw the hinge to the door frame in such a way that the hinge side surfaces facing the next cabinet spring back by approximately 1 to 3 mm with respect to the outer plane of the cabinet side surface, which arrangement is usually chosen anyway for reasons of manufacturing tolerances. In this case, an embodiment for the encompassed bearing block is expedient, in which the latter Bearing bracket in the area of the laterally open bore has a reinforcement pointing in the direction of the outer plane of the cabinet side surface, but this does not exceed it. In this way, the space made available by the jumping back by 1 to 3 mm is used to reinforce this pedestal.

The encompassed pedestal can (instead of an injection molded part) be a stamped sheet metal part, in which the bearing bore is formed by a sheet metal roller and the front surface (fastening surface) is formed by a sheet metal bend into which a thread is cut or pressed. This embodiment is less stable, but it is considerably cheaper to manufacture. The associated U-shaped bearing block could then be injection-molded from plastic, in order to adapt it to the strength and manufacturing costs of the encompassed bearing block.

The bearing pin, if it is not to be used for dismantling the door leaf, can contain corrugation at one end to form a press fit with the corresponding bore area of the U-shaped bearing block. In this way it is ensured in a simple manner that the bearing pin does not fall out of the bearing unintentionally.

The invention is explained in more detail below on the basis of exemplary embodiments which are illustrated in the drawings.

Fig. 1

in einer Vorderansicht ein aus dem Stand der Technik bekanntes 180°-Scharnier für Einzelschränke;

Fig. 2

die Ausklinkung im Türblatt, in der der zweite Bock montiert wird;

Fig. 3

in einer ähnlichen Ansicht wie Fig. 1 ein erfindungsgemäß ausgestaltetes 180°-Scharnier für Reihenschränke;

Fig. 4

die Ausführungsform der Fig. 3 in einer senkrecht zur Scharnierachse liegenden Schnittansicht, jedoch ohne die Darstellung der erfindungsgemäßen, seitlich geöffneten Bohrung bzw. Einschnittes (142);

Fig. 5

eine ähnliche Ausführungsform wie Fig. 4, jedoch mit einem Stift als Klemmstifteinrichtung anstelle von Madenschrauben;

Fig. 6

in verschiedenen Ansichten den zweiten, in die Ausklinkung gemäß Fig. 2 einschiebbaren Lagerbock, wobei jedoch die erfindungsgemäße Lagerung der Drehachse des Scharniers nicht, wie richtig in der folgenden Figur die Lagerung (100), (102), außerhalb des von der Abkantung des Türblatts gebildeten Eckbereichs dargestellt ist;

Fig. 7

eine entsprechende Darstellung des zweiten Lagerbockes für die erfindungsgemäße Ausführungsform gemäß Fig. 3 und 4;

Fig. 8 und 9

geeignete Klemmstifteinrichtungen, und zwar in Form eines Hakenstiftes bzw. in Form einer Madenschraube;

Fig. 10

in einer Seitenansicht und in einer Schnittansicht den ersten Lagerbock gemäß der Konstruktion von Fig. 1;

Fig. 11

eine entsprechende Darstellung des ersten Lagerbockes gemäß der erfindungsgemäßen Ausführungsform von Fig. 3 und 4, jedoch ohne die Darstellung der erfindungsgemäßen, seitlich geöffneten Bohrung bzw. Einschnittes (142);

Fig. 12

den zur Ausführungsform der Fig. 5 gehörenden ersten Lagerbock;

Fig. 13

den Lagerstift der Ausführungsform gemäß Fig. 3 und 4 sowie auch gemäß Fig. 5;

Fig. 14

den zur Ausführungsform der Fig. 5 gehörenden ersten Lagerbock in Blechstanztechnik;

Fig. 15

eine weitere Ausführungsform eines gestanzten ersten Lagerbockes; und

Fig. 16

eine noch andere Ausführungsform eines gestanzten ersten Lagerbockes.

It shows:

Fig. 1

in a front view of a known from the prior art 180 ° hinge for individual cabinets;

Fig. 2

the notch in the door leaf in which the second bracket is installed;

Fig. 3

in a view similar to FIG. 1, a 180 ° hinge designed for row cabinets according to the invention;

Fig. 4

the embodiment of Figure 3 in a sectional view perpendicular to the hinge axis, but without the representation of the laterally open hole or notch (142) according to the invention;

Fig. 5

a similar embodiment to Figure 4, but with a pin as a clamping pin device instead of grub screws.

Fig. 6

in different views the second, which can be inserted into the notch according to FIG. 2, but the bearing according to the invention of the axis of rotation of the hinge is not, as is correct in the following figure, the bearing (100), (102), outside of the fold of the door leaf formed corner area is shown;

Fig. 7

a corresponding representation of the second bearing block for the embodiment according to the invention according to FIGS. 3 and 4;

8 and 9

suitable clamping pin devices, in the form of a hook pin or in the form of a grub screw;

Fig. 10

in a side view and in a sectional view the first bearing block according to the construction of Fig. 1;

Fig. 11

a corresponding representation of the first bearing block according to the embodiment of Figures 3 and 4 according to the invention, but without the representation of the laterally open bore or notch (142) according to the invention;

Fig. 12

the first bearing block belonging to the embodiment of FIG. 5;

Fig. 13

the bearing pin of the embodiment according to FIGS. 3 and 4 and also according to FIG. 5;

Fig. 14

the first bearing block in sheet metal stamping technology belonging to the embodiment of FIG. 5;

Fig. 15

a further embodiment of a stamped first bearing block; and

Fig. 16

yet another embodiment of a stamped first bearing block.

3 and 4, the same notch as shown in FIG. 2 is required in the door leaf, as well as correspondingly identical holes for the screw fastening of the first bearing block in the door frame. For this reason, the different hinge shapes can be interchanged. For example, it is possible to first choose a hinge construction according to DE-U-77 07 165.9 for a single cabinet. If the individual cabinet is to be arranged in a row cabinet system at a later time, although the hinge should nevertheless enable an opening through 180 °, the known hinge can be replaced in the simplest manner by the hinge according to the embodiment of FIGS. 3, 4 or 5.

This interchangeability is a particularly great advantage.

1 shows, in a front view, a 180 ° hinge which consists of two bearing blocks 16, 24 which are articulated to one another via a hinge pin, one of which encompasses the other in a U-shape. The 180 ° hinge 10 enables a door opening by 180 ° for a single control cabinet. According to the construction shown, the hinge 10 consists of a first bearing block 16 fastened to the cabinet housing 14 by means of screw bolts 13 (see FIG. 4) and a second bearing block 24 which surrounds the first block 16 in a U-shape and is fastened to the door leaf 12 by means of clamping pin devices 20, wherein the bearing block 24 is inserted into a notch 18 provided in the folded area 22 of the door leaf 12, as can be seen in FIG. 1. The bearing block 24 encloses the notching edges 26, 28, wherein the clamping pin device, which has the shape of an angle pin in FIG. 1, extends beyond the width of the notch 18 into the corner regions 30 formed by the fold 22 and thereby holds the second bracket 24 in the notch 18.

The second bracket has, as can be seen in FIG. 1, but also see in particular in FIG. 6 the representation in the upper center, U-shaped, in such a way that it is the first bracket 16, which can also be seen in FIG. 10 , fork-shaped with little axial play, in the position shown in Fig. 1 the pin 20 simultaneously forms the axial bolt for the hinge 10 and thereby bores 36 in the two prongs 32, 34 of the U-shaped second bracket 24 and the aligned Breakthrough 38 of the first bracket 16 penetrates. The first bracket 16 is fastened by means of a cap screw 13 which pierces the cabinet housing 14 near the outer side surface 40 (see FIG. 4), for which purpose the bracket has a threaded bore 42.

The hinge 10 is essentially accommodated in the dead space 64, which is present anyway in the case of switch cabinet sheet metal doors due to the folds on the door frame and on the door leaf which serve to reinforce the door. It can also be seen that the door leaf 12 has almost the same size as the cabinet body, the hinge side surface 66 only slightly, ie, 1 ... 3 mm, in relation to the cabinet housing side surface 40. This distance also remains when the door leaf 12 is opened about the axis of rotation 68, due to a corresponding circular-arc-shaped configuration of the hinge edge 70. The two trestles, which can be pivoted about the axis 68, are designed such that in the closed position the web area 44 of the U-shaped second trestle, which has a relatively large material thickness, lies almost against the corresponding side surface 72 of the first trestle, see reference number 74, and the same applies to the 180 ° pivoted open position, in which the web area 44 (and specifically near the groove 46) almost abuts the opposite side 76 of the first bracket 16. In this respect, the hinge also forms stops for the two extreme positions of door 12. The stops are expediently somewhat beyond the swivel range of 180 °.

The level of the door leaf 12 shifts when opened such that the door leaf in the open state by 180 ° is closer to the cabinet housing that a second cabinet arranged directly next to the cabinet shown would not allow a full opening of the door panel 12 by 180 ° . The illustrated embodiment of the hinge is therefore only suitable for individually standing cabinets, but not for row cabinet arrangements.

In the case of row cabinet arrangements, the embodiments of FIGS. 3, 4 and 5 are provided. Here, too, the hinge again consists of a first bracket 116, a second bracket 124 encompassing the first bracket in a U-shape, and clamping pin devices 120, which here have the shape of straight screws (stud screws). The detailed illustration of the second trestle can be found in FIG. 7, the arrangement itself being similar to that of FIG. 6, but instead of the hole 36 for the clamping pin which simultaneously forms the axle pin, there is a threaded hole 136 which receives the stud screw 120. which can also take the form of a short pin with a thread at the bottom and a screwdriver slot at the top.

The stud screw can be screwed into the threaded bore 136 in such a way that the second bracket 124 is in turn fixed in the notch 18.

Another difference is that the second bracket 124 has a projecting one in the area of the U-legs Area 100 has. in which a further bore 102 is arranged offset with respect to the bore 136. The second trestle includes the first trestle 116, but with the trestle 116 or hole (142) according to the invention not shown in this figure but in FIG. 12, which trestle 116 can be inserted into the trestle 124 in this way that the bore 138 of the bracket 116 is aligned with the bore 102 of the bracket 124, so that the bracket 124 can now be pivoted around the bracket 116 with little axial play, see FIG. 4.

Fig. 4 also shows that the arrangement of the bore 138 and thus the arrangement of the axis of rotation of the hinge for row cabinets is not only outside of the corner region 30 formed by the fold 22 of the door panel 12, but according to the invention is such that the hinge bearing bolt 138 around a dimension M lies in front of the door leaf outer surface 78, which corresponds to the distance N between the center of the bearing pin and the tangent 80 lying parallel to the door leaf outer surface 78 to the most protruding bearing part, see FIG. 4. To measure this protruding beyond the door leaf outer surface 78 (corresponds to 2M) To make it as small as possible, according to the explanations of DE-A-32 46 398 mentioned at the outset, this dimension M can be chosen to be smaller than it corresponds to the otherwise selected half positioning width B, see FIG. 11, the positioning width B corresponding to the hinge bracket width , which is usually considerably larger, in particular twice as large as the diameter D of the hinge pin. The dimension M can be made smaller by shifting the center point of the bore 138 outward from the usual position, as shown in FIG. 10, by a dimension C, this dimension being chosen such that there is still sufficient material between the bore 138 and end face 82 remains so that the strength is impaired as little as possible.

As can be seen in FIG. 4, this embodiment results the possibility of opening the door leaf by a full 180 °, even if several cupboards are placed side by side. Due to the outside pivot point, the door leaf does not move inwards, but by an amount that is equal to M + M = 2M and is therefore sufficient to not be hindered by the hinge of the adjacent cabinet.

3 and 4 also allows the door leaf to be removed from the cabinet housing without the screws 13 having to be loosened. For this purpose, either the axis 138 can be pulled out or pushed out of the holes 102 or 138, in which case the first bracket remains on the door frame and the second bracket on the door leaf, or the stud bolts 120 are unscrewed so that the door leaf notches are released from the Grooves of the second hinge bracket can be pulled out. In this embodiment, the clip devices are therefore not necessary since the second bracket remains hinged to the first bracket. On the other hand, the grooves make it easier to re-assemble the door leaf, since these grooves (and possibly also the clip devices) can be used to insert the second bracket into the notch so that it is already essentially in the correct place for screwing in the screws 120 . In any case, it is easier to replace one type of hinge with another.

The attachment of two screws for each hinge in the relatively poorly accessible corner areas is cumbersome and it is therefore desirable to find a solution instead, which corresponds to that of FIG. 1, in which only a single hook pin 20 was used. To achieve this, however, it must be ensured that this pin 20 does not interfere with the movement of the first trestle. For this purpose, the trestle is according to the invention 116 designed according to FIG. 12. In principle, it is the same trestle as shown in FIG. 11, the arrangement of the bore 138 with respect to the front surface 140 being exactly the same, including the threaded bore 42 for the fastening screw 13. The difference lies in an incision 142, which is designed so that it can accommodate a hook-shaped clamping pin 20, which is inserted through the bores 136 of the hinge 124, in the closed position of the hinge effecting a door, on the other hand opens to one side so that a pivoting away of the second bracket in the counterclockwise direction around the pivot point 138 (see FIG. 12) is possible without the movement of the clamping pin being impeded by the first bracket 216.

Depending on the strength of the material from which the first trestle is made, it may be expedient to reinforce the remaining web area 144 by means of a bead 146, the bead thickness being approximately 1 to 3 mm, ie essentially taking up the free space, which the hinge side surface 66 springs back relative to the side surface 40 of the cabinet body, as already mentioned at the beginning. This springing back results in a free space, which is provided in FIG. 3 with the reference number 84 and which should normally take up manufacturing tolerances and assembly tolerances in door manufacture and door assembly. Instead, it can also serve to receive the bead 146, as can be seen in FIG. 5.

The second bracket has a first groove 46 for enclosing the vertical door leaf notch edge 28 in the web area 44 of the U, and a second groove 50 in the leg area 48 of the U for enclosing the horizontal door leaf notch edges 26. One side 52 of the second groove 50 is thereby this embodiment from the blunt end of a wedge sloping in the slide-open direction 54 formed so that the part 24 can be inserted into the notch 18 such that during the penetration of the edge 28 into the groove 46, the edges 28 of the notch 18 slide onto the two opposite wedge-like projections 54 (the legs of the U- Shaped part 24 are slightly compressed) until the edges 26 engage in the two grooves 52 and on the one hand they rest on one side of the groove 52, on the other hand on the projecting side wall 56 of the component 24.

The second trestle 24 can no longer fall out of the notch 18 unintentionally, but it can be removed from the notch again by pressing the legs together, if this should be expedient. The second bracket 24 is - in all embodiments - designed so that it covers the cut edges 26 of the notch 18 to the outside with the projecting wall areas 58, while the cut edge 28 is covered by the bar 60 forming the groove. This applies to the front surface of the door leaf, while the kinked side surface is covered accordingly by the projecting wall area 62.

It should be added that the bearing bolts can have a corrugation 108 at one end, with which the pin can be firmly pressed into the corresponding bore 102 or 36 of the second bracket, so that it cannot slide out again unintentionally.

The bearing parts, especially the first and second trestle, are usually injection molded from a suitable metal, e.g. B. made of aluminum, while the pins and studs can be made of round steel.

With lower strength requirements, such as those given for so-called engine control centers (MCC) to save costs, the second bearing block 124 can also be injection molded from a tough plastic, while the first bearing block 216 is then expediently a sheet metal stamped part (see FIG. 14) in which the bearing bore 138 is provided by a sheet metal roller and the front surface 140 by a sheet metal bend 145 , 147, 149 is formed, into which a grommet with a thread 42 is drawn. If the steel sheet is 2.5 to 3 mm thick (FIG. 14, left), there is sufficient strength, with the same thickness dimension 136 between the end face 82 and the bore 138 as in FIG. 12. With thicker material (e.g. 4 ... 5 mm thickness, see Fig. 14, right), it may be necessary to reduce the thickness dimension 139 by pressing away material (see reference number 141).

The end 143 used for fastening to the cabinet housing can be formed by the fold 145, 147 and 149, see FIG. 14, left, the fold 149 forming the surface 140 with the threaded bore 42. To increase the stability, a further bevel 151 can be attached, so that there is an angular sheet metal roll. The angular roller can also have a different direction of rotation, see Fig. 14, right. In the case of a large material thickness or a narrower roll, the folds adjacent to surface 140 can contribute to the formation of threads. The thread can also be created here by pressing or cutting.

A further embodiment for the first bearing block is shown in FIG. 15 in a side view and a top view. Again, relatively thin steel sheet is punched to an angle with reinforcing bead 150. Reinforcing angles 152 and bore 136 formed by a sheet metal roll. Instead of a threaded spout, a grub screw 154 is firmly pressed into a hole 158 in the chamfer 156 or - if the hole 158 has an internal thread - screwed in. In the case of lower strength requirements, the embodiment according to FIG. 16 can be used, which is designed without special reinforcements and - similar to FIG. 14 - is provided with a threaded bore 42 in a spout 160 formed by punching.

Claims (12)

180° hinge for a metal cabinet, in particular a switch cabinet, consisting of a first bracket (16) mounted on the housing (14) of the metal cabinet and a second bracket (24) which engages around the first bracket (16) in a U-shape and is mounted on the door panel (12) of the metal cabinet by means of clamping pin devices (20), in which the door panel (12) has a chamfer (22) directed towards the housing (14) and the bracket joined to the door panel (12) is pushed into a cut-out portion (18) arranged in the chamfer (22) of the door panel (12) so as to surround the edges of the cut-out portion, and in which the clamping pin devices (20) extend across the area of the cut-out portion into corner regions (20) formed by the chamfer (22) thereby retaining the bracket in the cut-out portion (18) once it has been pushed into this cut-out portion, wherein the clamping pin devices (20) are formed by a pin extending through the two brackets (16, 24), wherein the engaged bracket has a bore for receiving the clamping pin devices (20), characterised in that in the case of applications incorporating several cabinets in a row the axis of rotation of the hinge (10) lies outside the corner regions (20) formed by the chamfer (22) of the door panel (12) in such a way that the hinge bolt (104) lies at a distance M in front of the outer face (78) of the door panel corresponding to the distance N between the central point of the mounting bolt and the tangent (80) lying parallel with the outer surface (78) of the door panel to the mounting part (front face 82) projecting out the farthest, whereby the bore of the engaged bracket (216, Figs. 13, 14) is a bore or slot (142) for the clamping pin devices (20) opening laterally in such a way that the clamping pin (20) can be pivoted out from the region of this bracket (216) to allow the door to be opened.

180° hinge as claimed in claim 1, characterised in that the U-shaped bracket (24) forms a first groove (46) in the base area (44) of the U in order to enclose the vertical edge of the cut-out portion of the door panel.

180° hinge as claimed in claim 1 or 2, characterised in that the U-shaped bracket (24) forms a second groove (50) lying respectively in the leg regions of the U in order to enclose the horizontal edges (26) of the cut-out portion of the door panel.

180° hinge as claimed in claim 3, characterised in that the one side (52) of the second groove (50) forms a wedge (54) rising from the butt end in the direction of insertion.

180° hinge as claimed in claim 1, 3 or 4, in which the hinge brackets (16, 24) are of a standard width B which is substantially greater than, in particular twice as big as, the diameter D of the hinge bolt (104), characterised in that the distance M is smaller than half the standard width B.

180° hinge as claimed in claim 5, characterised in that the hinge axis is a mounting pin (104) which is arranged in corresponding co-axial bores (138) in the legs of the U-shaped bracket (124) or in the bracket (16) engaged thereby and that the clamping pin devices (20) are two screws (120) rather than a single pin, which are screwed into threaded bores (136) arranged in the legs (32, 34) of the U-shaped bracket (124).

180° hinge as claimed in claim 5, characterised in that the hinge axis is a mounting pin (104) arranged in corresponding co-axial bores (138) in the legs of the U-shaped bracket (124) or in the bracket (116) engaged thereby, and that the clamping pin device (120) is a pin having an elbow at one end.

180° hinge as claimed in one of claims 2 to 7, characterised in that the hinge (10) is screwed onto the cabinet housing (14) in such a way that the side face of the hinge (66) facing towards the next cabinet is set back from the outer plane of the side face of the cabinet (40) by approximately 1 to 3 mm.

180° hinge as claimed in claim 7 or 8, characterised in that the engaged bracket (216) has a reinforcement (146) in the area of the laterally open bore (142) which faces in the direction of the outer plane (78) of the side face of the cabinet but does not extend across it.

180° hinge as claimed in claim 7 or 8, characterised in that the engaged bracket (216) is a pressed metal part, in which the mounting bore (138) is formed by a roll-shaped metal part and the front face (140) (mounting surface) of an angled metal part, in which a thread is cut or pressed.

180° hinge as claimed in claim 10, characterised in that the U-shaped bracket used in conjunction therewith is an injection-moulded plastics part.

180° hinge as claimed in one of claims 6 to 9, characterised in that the mounting pin has a corrugated portion at one end to provide a press fitting with the corresponding bore region of the U-shaped bracket (24).

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