EP0783616A1

EP0783616A1 - Rod-type closure

Info

Publication number: EP0783616A1
Application number: EP95933423A
Authority: EP
Inventors: Dieter Ramsauer
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-30
Filing date: 1995-09-23
Publication date: 1997-07-16
Anticipated expiration: 2015-09-23
Also published as: DE59502536D1; JP3547757B2; DE19581783D2; US5887915A; EP0783616B1; DE9415846U1; JPH10506446A; WO1996010679A1

Abstract

The invention concerns a rod-type closure preferably for locking switch cupboard or similar doors or hinged lids. The rod-type closure comprises a flat strip rod (18) which is disposed such that it extends parallel to the edge of the door, preferably in the canting space (10), and has at least one locking part (34) disposed thereon. The rod-type closure also has a closure element (32), disposed on the door frame (24), for accommodating the locking part (34) such that it is locked. The rod-type closure further comprises an actuating device (14) for the longitudinal displacement of the flat strip rod (18) between an opening and a locking position. According to the invention, in order to form the locking part (34), the flat strip rod (18) is offset out of its longitudinal plane over at least part of its longitudinal extension and the profile of the flat strip rod (18) forms with one of its narrow edges, in or adjacent the offset portion, the locking surface over which engages a hook part (36) of the closure element (32), said hook part being disposed parallel to the plane of the flat strip rod.

Description

ROD LOCK

TECHNICAL AREA

The invention relates to a rod lock for locking preferably control cabinet doors or similar doors or flaps, consisting of a flat strip rod arranged parallel to the edge of the door, preferably guided in the canting space, with at least one locking part arranged thereon and of a locking element located on the door frame for lockingly receiving the Locking part and with an actuating device for the longitudinal displacement of the flat bar between an open and a locked position.

STATE OF THE ART

Such a rod lock is already known from EP 0 261 268.

In sheet metal cabinets with leaf-shaped cabinet doors, which are provided with an angled edge and thereby form a canting space, the requirements for the closing action of the rod lock are particularly high, because such doors have only limited stability. Such cabinet doors can warp and twist under certain circumstances, moreover, these doors are exposed to particularly high loads in certain applications. If, for example, the doors of electrical control cabinets which also have high-voltage switches are involved, arcs occasionally occur within the cabinet, which lead to the explosive release of arc gases, which leads to a high pressure load on the door. It is therefore important to design rod closures provided for such sheet metal cabinets in such a way that they securely connect the door to the cabinet body, so that the door can also absorb the loads described. Particular attention is paid to the shape and mounting of the locking bars with their locking parts.

According to EP 0 261 268, the flat ribbon rod, as a locking part, has round pins in cross section, which are placed on the flat ribbon material, for example by means of a riveting process, which pins move into a frame having a U-profile during the closing process.

In a rod lock known from DE 42 10 586 A1, which is similar to the type mentioned at the outset, the locking part of the flat ribbon rod is rotated by 90 ", while a hook-shaped component is used as the locking element.

A disadvantage of the first-mentioned publication is its still relatively complex construction, which should be simplified while maintaining the advantages already achieved, while the further citation should be mentioned as a disadvantage that the approach area, which is caused by the rotation of the ribbon bar in the Locking area arises, problems arise: The rear grip formed in this way leads to high friction and thus to high wear and tear as well as movement difficulties during the running-in process. Another disadvantage is the fact that the twist extends to both sides and thus results in a relatively wide construction, but only one side of these two sides can be used, so that unnecessary space is wasted, and the torsional load on the Rod quite large, which also increases the friction in the rod guides and increases the forces required for actuation even further. The object of the invention is to improve a rod closure of the type mentioned at the outset in such a way that it is of even simpler construction and can therefore be manufactured more cheaply, yet does not lead to high friction, high wear and tear and no difficulties in the retracting movement, and can also be made particularly narrow and stable.

The object is achieved in that, in the case of the rod closure of the type mentioned at the outset, the flat ribbon rod for forming the locking part is offset from its longitudinal plane over at least a portion of its longitudinal extent, in that the flat ribbon profile is offset with one of its offset in or adjacent to the offset offset portion ( outer) or non-offset (inner) narrow edges forms the locking surface, which is overlapped by a hook part of the closure element arranged parallel to the flat bar level.

Instead of the roller pegs, which are expensive to install, the offset or offset serves to lock the door and the door frame to the locking bar and thus the door connected to it by moving the offset behind a projection or hook part of the locking element which is carried by the door frame , or to release the door from the lock with the door frame by moving the crank into the area of a nose or ledge projecting in the same direction. In this latter case, locking is carried out with an edge lying in the plane of the bar, which practically eliminates the torsional load on the bar.

According to a favorable development of the invention, the flat ribbon rod is displaced in its offset section by an amount that is one to two times the thickness of the flat ribbon rod. This value is enough to get one to ensure sufficiently secure locking without the rod with its offset area and the associated holding element taking up too much space.

In particular, it is advantageous if the flat strip rod is offset in one direction from the plane of the rod in its displacement section. Alternatively, however, the flat ribbon rod in its displacement section in the course of the section first in one direction and then in the other, opposite direction, preferably by the same amount, e.g. B. be offset by the bar thickness. With a correspondingly designed holding element, this also reduces the torque effect on the flat bar because both lever arms are opposite and their effect is canceled.

According to yet another development of the invention, one or both narrow sides of the flat strip rod can be formed with trough-shaped recesses in the two areas of the offset bend lines causing the displacement. This results in an undercut area in the finished bent rod, which improves the guidance and locking in the holding element, so that particularly large holding forces result, for. B. the closure can be used in control cabinets with explosive arc discharges.

According to yet another development of the invention, the closure element is L-shaped, one L-leg being used for fastening the closure element and the other L-leg forming at its free end the hook part which overlaps the locking surface of the flat bar. According to yet another development of the invention, the closure element at the free end of its other L-leg, which is used for fastening, is equipped with a guide web for the one broad side of the locking section of the ribbon bar. With such a design, the guide web of the closure element can have an inclined or curved contact surface in the direction of displacement of the flat ribbon rod (and also perpendicularly thereto).

At least one nose or web can protrude from the central region of the fastening leg of the L-shaped closure element in the direction of the trough-shaped recesses of the flat ribbon rod, in order in this way to form an additional guide.

An even better guidance results if such a nose or web also protrudes from the overlapping hook part, preferably in precise alignment with the nose or web starting from the fastening leg of the closure element.

The closure element can also have a U-shaped cross section and be fastened to the web of the U, while a hook part extending around the flat ribbon rod guided between the U legs extends from the free ends of the U legs.

BRIEF DESCRIPTION OF THE INVENTION

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

It shows:

1 from the rear the canting space of a sheet metal cabinet door with a rod lock built into this canting space with a flat ribbon rod with a locking section and an associated locking element according to a first embodiment of the rod lock according to the invention; 2 is a sectional view taken along line 2-2 of FIG.

1 ;

Figure 3 is a sectional view taken along line 3-3 of Figure 1;

Fig. 4 is a sectional view taken along line 4-4 of Fig. 1;

5 is a sectional view taken along line 5-5 of FIG.

1 ;

6A and 6B are a side view and a sectional view for the detailed representation of the displacement section of the flat bar and a matching closure element according to one embodiment;

7A and 7B and 7C corresponding representations and a further representation as a plan view to explain a further embodiment;

8A and 8B and 8C are corresponding representations of yet another embodiment;

9A and 9B are corresponding representations of yet another embodiment; and

Fig. 10 in a view similar to Fig. 5 a

Sectional view along the line of sight X of Fig. 11;

Fig. 11 is a representation similar to Fig. 1 a little differently designed locking rod with modified locking section and modified associated locking element;

Fig. 12 is a sectional view taken along line 12-12 of Fig. 11;

13 is an axial sectional view along the section line 13-13 of FIG. 11;

Fig. 14 is a view similar to FIG. 10 for closer

Explanation of the fastening of the locking part on the door frame;

15 shows the locking part of FIG. 14 in a view from above;

16 shows the locking part of FIG. 14 in a view from the side;

17 shows a view of the fastening opening in the door frame suitable for the locking part according to FIGS. 15 and 16;

Fig. 18A is a top plan view of a mounting nut used in Fig. 14;

18B shows the fastening nut of FIG. 18A in a side view;

19 an associated countersunk screw;

20 the locking part according to FIG. 15 in one

Rear view with inserted screw and nut according to FIGS. 18 and 19; 21 shows the view according to FIG. 20, but after actuation of the nut with screw;

22A and 22B show a nut with attached tips;

23A and 23B in two views of the locking area offset by 90 °, a locking bar used according to FIG. 14;

24A, 24B and 24C, in three different views, a locking part of a slightly different design with two fastening holes.

BEST WAYS OF CARRYING OUT THE INVENTION

1 and 11 each show in a view of the canting space 10 of a sheet metal cabinet door 12 a rod lock 14, 214 arranged in this space, consisting of a lock 16, 216, of which a rod 18 running in the canting space 10, 218 goes out, which is slidably mounted on the one hand within the lock 16, 216, but on the other hand also on the door leaf 12 in a rod bearing 20. The sheet metal cabinet door 12 is hinged to the cabinet body 24 via hinge straps 22, see FIG. 2, which in turn utilize the other canting space 11 which is formed between the outer bend 26 and an inner profile sheet 30 welded onto the door leaf and receiving a seal 28 .

As can be seen from FIG. 3, a section along the line 3-3 of FIG. 1, or from FIG. 13, a section along the line 13-13 of FIG. 11, there is also a locking element on the cabinet body 24 32 or 232, the following is described in more detail and into which an offset or offset 34 or 234 formed by the locking rod 18 or 218 penetrates, and thus with the rod 18 or 218 via, for example, the guide 20 (see also FIG. 4) and the lock 16 or 216 connected door leaf 12 holds the cabinet body 24 and locks.

In the sectional view along line 5-5 of FIG. 1, which shows an embodiment of a closure element 32, see FIG. 5, but also z. 6A, as well as an alternative embodiment 232 in connection with FIG. 14 and FIGS. 23A, 23B, it can be seen that the rod 18 or 218, which is rectangular in cross section and formed by flat strip material, has an offset or offset 34 or 234 lie in a closure element 32 or 232, this offset part 34 or 234 being overlapped by a hook part 36 or 236 formed by the closure element 32 or 232.

In the embodiment shown in FIGS. 5 and 14, the closure element 32 and 232 is essentially L-shaped, one L-leg 38 and 238 being used to fasten the closure element 32 and 232 to the cabinet body 24, for example in that this leg 38 has a threaded hole into which a fastening screw 51 can be screwed in order to fix the locking element 32, the locking element 32 also being able to have a rotation lock, for example in the form of a prismatic opening in the cabinet body 24, can be inserted into the corresponding projections of the closure element 32 so as to prevent rotation.

In the embodiment according to FIG. 14, the leg 238 is provided with a countersunk bore 239 for a countersunk screw 241 according to FIG. 19, which screw 241 can be screwed into a special nut 243 according to FIG. 18A (top view) and 18B (side view) . The special mother has a rectangular shape with a greater length than width and can be made possible by a corresponding rectangular opening 245 in the door frame area 24 for the purpose of mounting locking element 232 with inserted screw 241 and attached nut 243.

In order to allow a specific alignment of the special nut 243 with respect to the contact surface 247 of the closure element 232, see FIG. 20, a projection 253 (FIG. 16) adapted to the opening 245 starts from this contact surface 247, which protrudes the closure element 232 to fix in the opening 245 and has a height that is equal to or slightly less than the thickness of the sheet material into which the opening 245 is made. From this projection 253 two lugs or lugs 249, 251 then emanate, which form stops for the special nut 243 (FIG. 18A) when the screw 241 is turned in the unscrewing direction, at which moment due to the friction between screw and nut, if necessary reinforced by a plastic point on the external thread of the screw 241, see FIG. 19, the nut 243 rotates (FIG. 20) in such a way that it rests on the lugs 249 with corresponding stop surfaces 257 and thereby lies down aligns that in this position the closure element 232 with lugs 249, 251, nut 243 and projection 253 can be inserted through the opening 245 in the housing or frame 24. After being pushed through, the screw 241 is turned clockwise by a screwdriver or similar tool (tightening the screw), as a result of which the nut 243 initially rotates behind the nut due to the friction between the screw and the nut and the free mobility of the nut 243 Sheet metal of the door frame 24 is rotated 90 ° into the position shown in FIG. 21. In this position, the nut in turn strikes the projections 249 and 251 and when the screw 241 is turned further, it can now be tightened in the nut 243, whereupon the parts of the nut 243 which now lie behind the sheet metal fix the closure element 232, as can be seen in FIG. 14. 22A and 22B, this special nut can also have projections or pointed teeth 259 pointing in the direction of the fastening surface of the door frame 24, which dig into the material of the door frame 24 when the screw 241 is tightened, and thereby z. B. result in an additional securing function which prevents the nut 249 from loosening again when the lock is in operation, but in particular serves to ground the nut in the case of lacquered sheet metal cabinets by pressing the teeth through the lacquer to the metal surface.

The embodiment described above thus results in a simplified assembly, since the closure element 232 can be supplied with a countersunk screw 241 inserted and a special nut 243 attached, and this component can simply be provided by a corresponding rectangular opening 245 in the door frame or the like. inserted and then the fastening screw 241 can be turned until it is screwed tight. The locking element 232 is automatically aligned by its projection 253, and then, when the screw 241 is actuated, the special nut 243 is rotated into its locking position and tightened. This means a considerable simplification of assembly and no components can be lost.

One possibility for guiding the flat ribbon rod is shown in section view 4-4 of FIG. 1, see FIG. 4, which rod guide is made of plastic and is arranged in the corner space of the bending space 10 in a manner secured against rotation by means of a stud arrangement 58 and designed in this way that the ribbon bar 18 can be inserted laterally by bending a projection or nose 54 into the guide, after which the fastening nut 56 z. B. a welding stud 58 is tightened, whereby the nose 54 secures against the rod 18. For larger forces to be absorbed, a two-piece metal rod guide can also be used. From Fig. 3, 4 and Fig. 13, 14 it can be seen that the lock 16 or 216 simultaneously represents a drive for the flat ribbon rod 18 or 218, as well as a rod bearing, so that there is the use of an additional Rod bearing, as shown at 20 in Fig. 1, can be dispensed with. The rod is driven by teeth of a pinion 62 or 262 engaging in corresponding perforations 66 in the rod center, which is part of a lock nut 64 or 264, which in turn is actuated through the door leaf 12 by an actuating device, such as a handle, pivot lever , Plug lock or the like is rotatable, the pinion 62 or 262 pushing up and down as it rotates due to its engagement in the perforations or toothings 66 of the rod 18 or 218.

Various embodiments 32, 132, 232, 332, 432 of the closure element and the associated displacement 34, 134, 234, 334, 434 of the flat ribbon rod 18, 118, 218 will now be discussed in more detail, this closure element preferably being close to Rod guides 20 is arranged, see FIG. 1, around the lever arm between the guide 20 and that of the closure element and the associated cranking or displacement, e.g. B. 34, locking formed, for. B. 42, as small as possible and thus the bending load on the flat bar, z. B. 18, as low as possible.

A first embodiment of such a closure element 32 can be seen in a side view in FIG. 6A and in a cross-sectional view in FIG. 6B, the embodiment shown in FIGS. 6A and 6B being similar to that of FIGS. 1 to 5 . In addition, it must be stated that the closure element 32 on the free end of an L-leg 38 fastened to the door frame serves a guide web 40 for the one broad side 44 of the rod section of the flat ribbon rod 18 adjoining the offset region 34. This guide web 40 can prevent the rod 18 from bending away from the leg 46 of the closure element 32 and thereby being released under the hook part 36. This lock is extremely stable and stresses the rod mainly in its larger cross-sectional extension on shear and bending, while the load in the smaller cross-sectional extension as well as the torsional load remain small because the corresponding corners, lugs and guide strips are all very close to the longitudinal axis of the rod and the lever arm lengths remain small.

The cranking part 34 is only released when, for example, the rod 44 is actuated by actuating an actuation, not shown here, for. B. is moved up to a position which is shown in dashed lines in Fig. 6A. Now the non-cranked area can slide past the hook part 36 according to FIG. 6B and thereby the door leaf can be pivoted away from the door frame. If the door is closed again, the non-cranked area penetrates again into the slot 48 formed between the end face of the hook part 36 and the guide web 40, the penetration thereby facilitating this penetration, in particular if the flat ribbon rod 18 and the locking element 32 are not exactly aligned with one another becomes that both the hook part 36 has a bevel 50 and the guide web 40 have a bevel 52, which thus together form a kind of funnel. Has the rod reached the position shown in Fig. 6B, z. B. via the lock 16 (Fig. 1), the rod 18 as shown in FIG. 6A can be moved down again, and if the cranked area 34 would have been completely outside the closure element 32, an inclined surface 60 of the beginning of the cranking 34 also could serve the easier entry movement at the edge 66. A further inclined surface 68 could have the underside 70 of the hook part 36 or 136 (see FIG. 7C) in order to ensure, when the door is not fully pressed on, for example due to sealing material 28, that the cranking 34 or 134 does not move when the door runs in the end face of the hook 36 or 136 is blocked, but instead slides onto the inclined surface 68 and thereby presses the locking rod 18 or 118 into the locking element 32 or 132 and then also pulls the door. The movement continues until the z. B. In FIG. 6A, the position of the locking rod 18 with respect to the holding element 32 has been reached, in which position the locking element 32 is loaded essentially in the center and thus a maximum force absorption capability is developed when the locking element 32 is secured with a central screw ( 1) or also, for example, with two lateral screws (in the areas 72 according to FIG. 6A) on the cabinet body 24.

As FIG. 6A also shows, the extent of the hook part 36 is somewhat less than that of the other parts of the closure element 32, namely in particular the two L-legs 38 and 46 and the guide web 40. This measure makes the necessary movement path Locking rod 18 for opening or closing smaller ones, otherwise with essentially the same stability and guiding accuracy.

While the embodiment according to FIGS. 6A and 6B works in such a way that when the locking rod 18 moves out of the position shown with solid lines, be it up or down, the door can be opened, it is in the in 7A, 7B and 7C represent embodiments shown exactly the other way round: In a central position, shown with solid lines, of the otherwise similarly constructed locking rod 118, it lies in such a way that the cranked area 134 passes the hook part 136 when the door leaf is in relation the door frame is swung open or closed. If, on the other hand, the rod 118 is moved up or down, see the broken line, the part of the rod 118 which is not cranked gets under the hook part 136 and the door can no longer be opened. With this In the embodiment, the longitudinal extent of the hook part 136 is still somewhat less than in the embodiment according to FIGS. 6A and 6B, as conversely the axial extent of the cranking area 134 is somewhat larger, which has the effect that the accuracy of the displacement of the locking rod 118 to achieve the open area doesn't need to be that precise. For the rest, however, the closure elements 32 and 132 have a similar structure, likewise with the already described run-on surfaces to facilitate the closing process if the closure rod 118 or 18 is not precisely aligned with respect to the closure element 132 or 32.

It should also be added that, due to the axially shorter extension of the hook part 36 or 136 compared to the total extension of the closure element 32 or 132, surface areas 72 accessible from above, which make it possible to drill holes 74 (FIG. 7B ) to be provided for fastening screws with countersunk head which are countersunk and thus also allow fastening screws to be attached from above, in contrast to the arrangement according to FIGS. 1 and 5. The reference number 74 in FIG. 7B shows such a countersunk bore. Since there are two such surfaces 72, two fastening screws can be provided here in a simple manner, which results in an additional rotation lock for the closure element 32 or 132.

FIG. 10 shows an embodiment for a closure element 232 which is provided for single-hole fastening and can be fastened according to FIG. 13 with a countersunk screw 141 with a standard nut 143, or according to FIGS. 15 to 22 by means of a special fastening which has already been described above has been described.

The closure element 232 has inclined run-up surfaces 268 with which the offset areas 234 of the locking rod 218 cooperate and thus make it easier to retract the offset area. Of It is important here, as with the other embodiments, that the fastening axis of the screw 141 or nut 14 _. 3 is aligned exactly with the axis E of the locking bar (outside of its cranking areas), so that there are no torsional moments acting on the locking bar 218 as a whole when it absorbs the closing forces, only the lever arm through the cranking plays a role. Another advantage is that the locking bar can be turned 180 "about its longitudinal axis (e.g. for the purpose of changing the actuator), which may require rotating the locking member (e.g. 232) but not Changing the fastening - since the rotation does not change the position of the fastening screw (e.g. 141 241).

The improved fastening shown in FIGS. 15 to 22 has the further advantage that the fastening can also take place when the interior of the control cabinet, ie the surface on which the special nut 243 according to FIG. 14 comes to rest, during assembly of the closure element 232 is not or only poorly accessible. The reason for this is that the locking element with its projections 249, 251, 253 including screw 241 and special nut 243 can be inserted from outside through the opening 245, whereupon the screw 241, which is also accessible from this side, can be rotated and the overall arrangement can be determined , as already described above. Here, too, the axis of the screw 239 expediently lies exactly in the axial line E of the locking rod.

If particularly high stability is desired, it can also be fastened by means of two openings in the closure element 332 and using two countersunk screws, as shown in the illustration in FIGS. 24A, 24B and 24C. The locking element 332 shown there is otherwise similar in construction to the arrangement according to FIG. 10, again with run-up slopes 368 and a further inclined surface 369 at the end of the guide web 340 which should make it easier to retract the locking bar when the door is closed. The attachment is done here with the help of two countersunk screws with associated usual nuts, as can also be seen in FIG. 13, for example.

24C, the hook area 336 is withdrawn so far that the depressions 371, which the countersunk screw heads are intended to receive, remain freely accessible in order to be able to feed a tool such as a screwdriver, the associated bores 373 can be aligned with their center to one Line below the hook 368 (in contrast to Fig. 14, 15) are placed. One can align the axial plane of the locking rod entering this locking element 332 in such a way that no twisting forces are exerted on the locking rod if the locking takes place in such a way that the non-cranked area of the locking rod serves for locking purposes during the cranked area is the one that releases the locking rod in the open position of the closure. This is explained in more detail below with reference to FIG. 7A.

In contrast, note the fact that, in the embodiment according to FIGS. 14, 15, the axis of the opening 239 shown there lies further away from the hook 268 and is therefore suitable for rods which lock with their cranked area and with their normal area aligned with the opening 239 lies outside the hook arrangement 236.

The arrangement according to FIGS. 24A, 24B, 24C is thus somewhat narrower, but somewhat longer, while the arrangement according to FIGS. 12 or 13 or 14 to 16 is somewhat shorter, but somewhat wider.

6 and 7, a locking rod 18 and 118 is shown, the narrow edges of each in lie on one plane, this is not the case with the locking rod 218 shown in FIGS. 23A and 23B. Here, the cranked area is pressed in such a way that oblique run-up surfaces 284, 292 result, each of which begins to spring back in relation to the narrow edge plane 291 of the non-cranked part of the locking rod 218 and ends in a plane 293 which is flush with the plane 291.

In the embodiment shown in FIGS. 8A, 8B and 8C, the flat ribbon rod 318 is constructed similarly to the rod 18 or 118 of FIGS. 6 or 7, but additionally has ng bending lines 76, 78 in in the region of the two offset cranking elements the narrow sides 80, 82 have recessed, trough-shaped recess areas 84 and 86, which are arranged here on both sides, so that the illustration in FIG. 8C appears axially symmetrical both about the transverse axis and about the longitudinal axis. These depressions 84, 86, which are easy to produce during the punching process, result in an additional guide channel 88 or 90, see FIG. 8B, which is preferably designed so that it has the same width as the material thickness S of the flat strip rod 318, which is what can be achieved that the offset by the dimension 2S from the plane of the flat bar, see Fig. 8A, so that the total width of the arrangement (rod with offset) is 3S.

This guide channel 88 or 90 makes it possible to give the locking mechanism an even greater stability, preferably from the central region of the fastening leg 438 of the closure element 432 (FIG. 8B) a nose directed towards the trough-shaped recess of the ribbon bar or web 92 protrudes, as may also protrude from the overlapping hook part 436 an aligned nose or web 94. In addition to the increased stability of the overall arrangement as a result of these additional guides, there are also run-up surfaces 92, 94 which either prevent the narrow sides 80, 82 from being retracted lightened area (similar to FIG. 7) or in the bent area (similar to FIG. 6).

Finally, reference is also made to FIGS. 9A and 9B, in which the locking rod 418 in its displacement section A during the course of this section first in one direction, reference number 96 and then in the other, opposite direction, reference number 98, preferably is offset by the same amount in each case, this amount approximately corresponding to the bar thickness in the embodiment shown. The total width of such an arrangement is again approximately three times the thickness S of the flat bar, that is to say also 3S here, so that the width of an associated closure element 532 according to FIG. 9B essentially corresponds to that of the embodiment from FIG. 8B. This closure element 532 has a substantially U-shaped cross-section, the web 538 of this cross-section serving as a fastening surface, while a hook part 536 projects inwards from the free ends of the U-legs 546, behind which the respective offset part 96 or 98 when the closure is brought into its closed position, since the rod is supported here on both sides, provided the hook parts 536 of the closure element extend over the distance A.

The advantage of this arrangement is its extensive symmetry, which makes it possible to use the rod the other way around, without the conditions changing. Another advantage is that the locking rod is not subjected to twisting.

Instead of complete crimping over the entire cross-sectional length (FIG. 8C), it may be sufficient to bend out only the one end of the rod 418, which is the upper end according to FIG. 6B, in such a way that only at the upper end does an offset occur, which is at the lower end At the end of the cross-sectional extent reduced to zero again, see FIG. 24. Such a shape would be usable in a closure element according to FIG. 6B without problems.

The offset 99 shown in FIG. 1 can be omitted if the rod 18 is guided at a constant distance from the fold 100 of the door leaf 12, which is made possible, for example, by a different arrangement or different construction of the rod guide 20. One would then also move the closure element 32 fastened to the door frame closer to the fold 100 of the door leaf 12, for example to the extent that the surface 33 of the closure element 32 lies against the inner surface 35 of the fold 100 and thereby an additional guidance of the door leaf with respect to the Door frame allows.

Overall, compared to the prior art, this not only simplifies production, the arrangement is also much more compact and can be accommodated in a narrower space. Due to the narrowness, the lever arms of the lock are also smaller, which increases the force absorption capacity with the same material thickness.

An advantage in particular of the configurations of the closure element according to FIGS. 14 to 16, but also of the configuration according to FIGS. 24A, 24B and 24C, in connection with the locking rod according to FIGS. 23A and 23B is the fact that the Cranking profile (see, for example, FIG. 23B) is adapted to the profile of the hook 263 of the closure element 232 according to FIG. 15 that can be seen in plan view (realized somewhat less precisely in the closure element 332 according to FIG. 24C).

With this configuration, the locking bar 218 can operate in such a way that it causes an open door in a position similar to that shown in Fig. 7A, in a central position, but a locked door in a position below or above. If you turn the rod 218 by 180 "around its longitudinal axis, the result is Position according to FIG. 6A, in which the middle position results in a locked door, but a position shifted by the offset dimension below or above, but an open door. Both methods of operation can be achieved with the same closure element as is used, for. B. is shown in Figs. 14 to 16.

Instead of rotating the locking rod 218 about the longitudinal axis by 180 ° for the purpose of changing the function, the locking element 235 can instead be rotated by 180 ^β about an axis parallel to the axis of its fastening screw in order to achieve the same effect.

This possibility of changing the mode of operation is particularly interesting in the case of swivel lever locks, in which the swivel lever can be locked, for example, in a horizontal position and in two mutually opposite vertical positions, these three positions of the swivel lever having a central position of the locking rod's offset relative to the locking element and one position is linked below and a position above, see e.g. B. Applicant's PCT publication WO 94/15049. So by simply turning z. B. the locking rod, the central position of the handle can be changed from an open position of the lock to a closed position - and vice versa.

In contrast, DE 42 10 586 A1, for example, does not offer this adjustability, which is made possible according to the invention: if the locking rod used there is rotated by 180 ° about its longitudinal axis, nothing changes in the geometric arrangement and thus nothing in the function.

INDUSTRIAL APPLICABILITY

The invention is e.g. B. commercially applicable in control cabinet construction.

Claims

PATENT CLAIMS

1. Bar lock for locking preferably control cabinet doors or similar doors or flaps, consisting of a flat ribbon rod (18) arranged parallel to the edge of the door, preferably in the tilting space (10), with at least one locking part (34) arranged thereon and one on the door frame Closure element (32) for lockingly receiving the locking part (34) and with an actuating device for the longitudinal displacement of the flat bar (18) between an open and a locked position, characterized in that the flat bar (18, 118, 218, 318, 418) for Formation of the locking part (34, 134, 234, 334, 434, 534) is offset over at least a portion (A) of its longitudinal extension from its longitudinal plane (E), and that the flat strip profile in or adjacent to the offset portion (A ) with one of their offset (outer) or non-offset (inner) narrow edges (e.g. B. 80) forms the locking surface, which is arranged by a hook part (36; 136; 236; 336; 436; 536) of the closure element (32; 132; 232; 332; 432; 532) is overlapped.

2. Rod closure according to claim 1, characterized gekenn¬ characterized in that the flat ribbon rod (z. B. 118) is offset in its displacement section (A) by an amount that is one to two times the thickness (S) of the flat ribbon rod .

3. rod closure according to claim 2, characterized gekenn¬ characterized in that the ribbon rod (z. B. 18, 118, 218, 318) is offset in its displacement section (A) in one direction out of the rod plane (E).

4. Rod closure, according to claim 2, characterized gekenn¬ characterized in that the flat bar (418) in its displacement section (A) during the course of this section first in one direction (96) and then in the other, opposite direction (98), preferably around the same amount (e.g. S) is offset.

5. rod closure according to claim 3, characterized gekenn¬ characterized in that in the two areas of the Ver¬ effecting offset bend lines (76, 78) one or both narrow sides (80, 82) of the flat ribbon rod 318) trough-shaped recesses (84, 86) form.

6. Rod closure according to claim 1, characterized gekenn¬ characterized in that the closure element (32, 132, 232, 332, 432) is L-shaped, the one L-leg (38, 138, 238, 338, 438) of the Fastening of the closure element is used and the other L-leg (46) forms at its free end the hook part (36, 136, 236, 336, 436) that overlaps the locking surface of the flat ribbon rod.

7. Rod closure according to claim 6, characterized gekenn¬ characterized in that the closure element (z. B. 32) at the free end of the fastening leg L (38) has a guide web (40) for one broad side (44) of the locking portion (A) the Flachband¬ rod (18) forms.

8. Rod closure according to claim 7, characterized gekenn¬ characterized in that the guide web (40) in rod Ver- has an inclined or curved ramp surface (68).

9. Rod closure according to claim 7 or 8, characterized in that the guide web (40) in the direction perpendicular to the rod axis has an oblique or curved ramp surface (52, 369).

10. Rod closure according to claim 6, 7, 8 or 9, characterized in that from the central region of the fastening leg (438) of the closure element (432) in the direction of the trough-shaped recesses of the flat ribbon rod (318) at least one nose or web (92 ) protrudes.

11. Rod closure according to claim 10, characterized gekenn¬ characterized in that from the overlapping hook part (436) such a nose or web (94) protrudes, preferably in alignment with the other nose or web (92).

12. Rod closure according to claim 4, characterized gekenn¬ characterized in that the closure element (532) has a U-shaped cross section and is fixed to the web (538) of the U-shaped cross section, while from the free ends of the U-legs (546) In each case a hook part (536) extending around the flat band rod (418) guided between the U-legs extends.

13. Rod closure according to claim 3, characterized gekenn¬ characterized in that the locking rod (218) at the beginning of the crank each forms a recessed area (292), from which a rising inclined surface (292, 284) starts.

14. Rod closure according to claim 1, characterized gekenn¬ characterized in that the locking part (232) in the region of an opening (253) for a fastening screw (241) at least one approach (253) for aligning the locking part (232) in an opening (245) in the mounting surface (24) for the locking part

(232).

15. Rod closure according to claim 14, characterized gekenn¬ characterized in that two lugs (249, 251) are provided which limit the rotational movement of the fastening nut (243) for the fastening screw (241).

16. Rod closure according to claim 15, characterized gekenn¬ characterized in that the fastening nut (243) has an elongated shape which is adapted to the opening (245) in the fastening surface (24) for the locking part (232) and in One direction with its dimensions fits through the opening (245), and not in another, offset second direction.

17. Rod closure according to claim 16, characterized gekenn¬ characterized in that the screw (241) when tightening the nut (243) rotates in the second direction in which it is held by the two lugs (249, 251).

18. Rod closure according to one of claims 13 to 17, characterized in that the openings (253) for the fastening screws (241) are aligned with the non-cranked rod plane (E).

19. Rod closure according to claim 1, characterized gekenn¬ characterized in that the side profile of the recessed portion (A) formed by the recess space has a similar shape, such as cut roof shape or only is slightly larger than the outer profile of the hook part (z. B. 236) of the closure element (232).

20. Bar lock according to claim 1 or claim 19, characterized in that the top view profile of the offset portion (A) at the transition from the non-offset part (291) of the locking rod (z. B. 218) to the offset part (293) of the locking rod, the rod width jumps back, then continues to climb up to the original width (292).

21. Rod closure according to claim 1 or claim 19, characterized in that the closure element (z. B. 232) has at least one countersunk bore (z. B. 239) for receiving a fastening screw (241), the axis of which to the longitudinal axis (E) of the non-offset part of the locking rod (218) is aligned.

22. Rod closure according to claim 1 or 21, characterized in that the closure element in the region of the fastening surface of the closure element forms an alignment projection (153; 249, 251) which has a recess or opening (245) on the surface on which the Closure element to be fastened interacts.

23. Rod closure according to claim 22, characterized gekenn¬ characterized in that the closure element in the region of the projection (z. B. 251) has a bore (239) for a fastening screw (241) which is screwed into a radially elongated nut (243) which fits through a corresponding opening (245) in the fastening surface in at least one direction and does not fit in at least one other direction.

24. Rod closure according to claim 23, characterized gekenn¬ characterized in that the fastening screw (241) (or the nut (243)) in the region of the thread has a friction-increasing device (255).

25. Rod closure according to claim 23 or 24, characterized in that the nut (243) has teeth (259) on one contact surface.

26. Rod closure according to claim 25, characterized gekenn¬ characterized in that the nut (243) in the side edges recesses (257) for receiving the lugs (249, 251) of the closure element (z. B. 232).

27. Rod closure according to claim 1, characterized gekenn¬ characterized in that the bore (239) for fastening the closure element is outside the line of alignment of the hook part (z. B. 236) of the closure element or that the hook part (336) in the region of the bore (s ) (373) jumps back and thus makes the head of a fastening screw accessible for an associated tool, such as a screwdriver.