Abstract:
A swivelling lever control that can be locked after being swiveled inwards and for closing switchboard cabinet doors has a trough set on the outer surface of a door, in which the driving device for the closure, such as gear drive, lever drive or locking shaft, is arranged. An actuating lever is articulated to the driving device so as to swivel out of the trough about an axis parallel to the supporting surface of the trough. A hook device on the actuating lever engages a back engagement surface of the trough when the actuating lever is swiveled in, thus retaining the actuating lever after it has been swiveled into the trough. The actuating lever projects at its free end beyond the trough and bears an unlocking device with an actuating surface for the hook device that can be actuated by a pressure acting away from the outer surface of the door.

Description:
BACKGROUND OF THE INVENTION 
     1. Technical Field 
     The invention is directed to a swivel lever actuator which can be secured in the swiveled in state for the closure of switch cabinet doors or the like, with a trough or dish which is arranged on the outer surface of the door or the like and in which is arranged the driving device for the closure, such as a toothed-wheel drive, lever drive or lock shaft, wherein an actuating lever is articulated at the driving device so as to be swivelable out of the dish about an axis extending parallel to the supporting surface of the dish on the door or the like, and with a finger lever which is mounted on the actuating lever so as to be swivelable, wherein a hook is arranged at one end of the finger lever in such a way that when the actuating lever is swiveled into the dish the hook engages behind a step of the dish and accordingly prevents the actuating lever from swiveling out, and with an actuating surface arranged at the other end of the finger lever, wherein the hook moves out of its back-engagement position when the actuating surface is pressed. 
     2. Description of the Related Art 
     A swivel lever actuator of the type mentioned above is already known from U.S. Pat. No. 5,467,623 (Takigen). A disadvantage in this known arrangement is that the actuating surface must always be pressed in the direction of the door leaf in order to cancel the locking achieved by the hook and so as to be able to swivel the hand lever out of its swiveled in position, i.e., it is disadvantageous that unlocking (pressing) conflicts with the swiveling out, that is, the pulling, of the actuating lever. 
     It is also possible to arrange the finger lever in such a way that the pressing direction coincides with the opening direction of the actuating lever when the latter is actuated. 
     Therefore, in the arrangement according to the prior art, it is compulsory that the swiveling out of the actuating lever is reinforced by a powerful pressure spring, while the actuation of the finger lever must be carried out against the force of a spring with relatively little resistance so that the two spring actions do not conflict with one another. 
     OBJECT AND SUMMARY OF THE INVENTION 
     It is the primary object and summary of the invention to further develop the known arrangement such that the finger lever can be actuated in such a way that the swiveling out of the actuating lever is not impeded by the unlocking process. 
     In the prior art, the actuating lever can be additionally locked by means of a cylinder lock. This should still be possible. An additional locking of this kind is advantageous when the swivel lever closure may be exposed to strong vibrations. Such strong vibrations are possible, for example, through the effect of earthquakes or when the closure devices are arranged on switch cabinets that are arranged on machines which vibrate heavily during operation, for example, in crane installations. 
     Further, the arrangement should be capable of being rearranged in such a way that a padlock can be inserted. 
     This object is met in that the free end of the actuating lever projects over the dish and/or has unlocking means with an actuating surface for the hook device, which unlocking means can be actuated by pressure directed away from the outer surface of the door. In particular, it is advantageous when the finger lever projects over the free end of the actuating lever and has an actuating surface which faces in the swiveling in direction of the actuating lever. 
     By means of these features, it is possible to actuate the finger lever in such a way that, when actuated, the pressing action not only cancels the locking of the finger lever, but at the same time also reinforces the swiveling out movement of the actuating lever out of its swiveled in position or this movement can be reinforced manually. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be described more fully hereinafter with reference to embodiment examples shown in the drawings. 
     FIG. 1 is a side view of a lockable swivel lever actuator constructed according to the invention for the closure of a switch cabinet door, in this case in connection with a flat rod closure installed in a switch cabinet; 
     FIG. 2 shows a cross-sectional view through the arrangement according to FIG. 1 along line II—II of FIG. 1; 
     FIG. 3 shows the swivel lever actuator shown in FIG. 1, but, in this case, in connection with a round rod closure and with an additional securing device through which a padlock can be inserted; 
     FIG. 4 shows a cross-sectional view through the closure according to FIG. 3 along section line IV—IV in FIG. 3; 
     FIG. 5 shows a sectional side view (approximately to scale) of a swivel lever actuator similar to that shown in FIG. 1; 
     FIG. 6 shows a side view of the swivel lever of the arrangement in FIG. 5; 
     FIG. 7 shows a top view of the arrangement according to FIG. 5; 
     FIG. 8 shows an enlarged detail of the locking device of the arrangement shown in FIG. 5 in the locked position; 
     FIG. 9 shows a view similar to that in FIG. 8 of the locking device in the unlocked position; 
     FIGS. 10 to  14  show another embodiment form of the invention in views similar to those in FIGS. 5 to  9 ; 
     FIGS. 15 to  19  show another embodiment form in a corresponding manner; 
     FIG. 20 shows a side view of a swivel lever in which is provided an eyelet enabling an additional locking by means of a padlock; 
     FIG. 21 shows a front view of the swivel lever actuator according to FIG. 20 with inserted padlock; 
     FIG. 22 shows a side view, in section along the longitudinal axis, of the swivel lever actuator according to FIG. 21; 
     FIG. 23 shows a rear view of the dish of the arrangement according to FIG. 21; 
     FIG. 24 shows a top view of another embodiment form of the swivel lever actuator constructed according to the invention; 
     FIG. 25 shows a side view of the embodiment form according to FIG. 24 in section along the longitudinal axis; 
     FIG. 26 shows a side view of the arrangement according to FIG. 24 in which the swiveled out as shown by dashed lines; 
     FIG. 27 shows a somewhat modified embodiment form compared with FIG. 25 in a partial sectional view; 
     FIG. 28 shows a top view of a swivel lever actuator according to the invention in a different construction; 
     FIG. 29 shows a side view of the embodiment form according to FIG. 28 in section in longitudinal direction; 
     FIG. 30 shows a rear view of the dish according to FIG. 29; and 
     FIG. 31 shows a modification over FIG.  29 . 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 1 is a side view showing a swivel lever actuator  10  for the closure  12  of a switch cabinet door  14 , a housing wall, sheet-metal case cover or the like, with a dish  18  which is arranged on the outer surface  16  of the switch cabinet door  14  or the like and in which is arranged a lock shaft  20  which drives, for example, a sash  22  in a manner not shown more fully and also, in this case, flat strip locking rods  24  (FIG. 1) extending along the door leaf or, in accordance with FIG. 3, round rods  26 . For further details in this connection, reference is had to the European Patents 0 054 225 and 0 261 267. 
     An actuating lever  28  is articulated at the free end of this lock shaft  20  directed away from the sash so as to be swivelable out of the dish  18  about an axis  30  extending transverse to the axis of the shaft  20 . In the swiveled out state which is shown in dashes in FIG. 26, the shaft  20  can be rotated with the actuating lever  28  about its axis  32 , for example, in order to swivel a sash  22  behind the door frame  36  (see FIG. 2) of a switch cabinet, not shown, and accordingly to close the door. Alternatively or in addition, a door closure position is achieved, as shown in FIG. 1, by flat strip rods  24  which can be moved upward and downward, wherein a stop wheel  34  runs up on the edge, shown in FIG. 1, of a switch cabinet housing and holds the door leaf  14  at which the locking rod  24  is guided by means of rod guides  38 . In the embodiment forms shown in FIGS. 1 and 3, the locking rods  24  are located in the locked position in which the actuating lever  28  faces downward as can also be seen in FIG.  26 . In this position, the actuating lever  28  can be swiveled into the dish  18 , in which position the actuating lever  28  is substantially enclosed by the dish edges. The devices described in the following should serve to hold the actuating lever in this swiveled in position in which the actuating lever  28  is prevented from being rotated out of its position oriented to the dish due to the fact that it is enclosed by the dish edges. Therefore, it is not possible for the door to be opened in this position. 
     When the actuating lever  28  is in its position in which it is directed vertically downward, its own gravitational force and friction are sufficient in themselves to hold it in this position. However, during shaking movements such as those which can occur, for example, in crane installations, there is a risk that the actuating lever  28  will move out of its swiveled in position again and into the swiveled out position shown in dashed lines in FIG.  26 . In this position, rotation can also be effected about axis  32  due to further shaking movement, so that the closure  12  opens in certain cases and therefore exposes the interior of the switch cabinet in an unwanted manner. It is also possible for an unauthorized person to swivel out the actuating lever  28  and move the door closure out of its closed position into an open position by rotating about the axis  32 , thereby making it possible to open the door  14  of the switch cabinet. 
     In order to prevent this, a protrusion  39  can be provided at the free end of the hand lever  28  according to FIG. 6, wherein a cylinder lock  41  can be received in the protrusion  39  (see FIG.  5 ). The locking member of the corresponding cylinder can be mounted in such a way that it contacts a rear surface of the door leaf  14  in the locked state when the hand lever  28  is swiveled in and accordingly prevents the hand lever  28  from being swiveled out of its swiveled in position in an unwanted manner. 
     Alternatively, a locking member of the kind mentioned above can also lie behind a contact surface formed by a screwed on casing  45 . However, it cannot necessarily be seen whether or not the cylinder  49  is locked, i.e., it becomes more difficult to monitor the locking state. In order to provide additional or alternative locking, there is a projection  40  which is supported by the dish  118  (see FIG.  3  and FIG.  22 ), wherein an eyelet  42  is arranged at the free end of the projection  40 . When the actuating lever  128  is swiveled in, this eyelet extends through an opening  44  in this hand lever and makes it possible to insert the shackle  46  of a padlock  48 , which also prevents the hand lever  128  from swiveling out of its swiveled in position. 
     The great advantage in securing by means of a padlock  48  consists in that an individual padlock  48  belonging to a certain person can be used, for example, at certain times and for certain reasons, so that it is possible for this person to secure a door against unauthorized opening. Only this person can open the padlock again by means of the appropriate key, remove the padlock, and then open the door closure by folding out and subsequently turning the actuating lever. 
     However, it may be that a special locking of this kind by means of a padlock or a cylinder lock is not required at certain times. In order for the actuating lever to be held in the swiveled in position in this case, a hook device  58  is provided, according to the invention, at the swivel lever  128 , which hook device  58  engages with a back-engagement surface  60  of the dish  18  when the actuating lever  128  is swiveled in, thereby holding the actuating lever  128  in the swiveled in position. The hook  58 , which in this case is held so as to be swivelable about an axis  62  formed by the actuating lever  128 , has a first actuating surface  64  which projects over the end of the actuating lever  128  and which is directed in such a way that the user must grasp this surface  64  under the lever  66  corresponding to an opening movement of the hand lever  128  in order to swivel the hook  58  out of its locked position (in the counterclockwise direction with reference to FIGS. 5,  6 ,  8  and  9 ), wherein this pulling direction not only swivels the hook  58  out of its locking position, as is shown in FIG. 9, but also subsequently pulls the actuating lever  128  out of its swiveled in position after the hook is undone. This operating sequence is intuitive for the user and therefore represents a particularly advantageous embodiment form of this hook device  51 . 
     However, by means of a second actuating surface  70  which is provided in this instance and which projects beyond the plane  52  of the actuating lever  28 , the hook  58  can also be swiveled out of its locking position by a pressing movement in the direction of the hand lever surface  52 . Further, the additional lever arm forming this actuating surface  70  has, on its back, a recess  72  in which one end of a pressure spring  68  is received, while the other end of the pressure spring  68  is held in a recess  74  which is formed inside the actuating lever  128 . 
     The actuating lever  128  can be provided with an additional spring device in the area of its axis  30 , as in the prior art, in order to move the actuating lever  128  out of its swiveled in position automatically when required. In this case, when the actuating surface  70  of the hook device  58  is pressed, this hook is released and the spring action presses the actuating lever out of its swiveled in position insofar as it is not held by the cylinder lock  41  or by an inserted padlock  48  according to another embodiment form. This other embodiment form is shown, for example, in FIG. 21 in a top view, in FIG. 22 in a longitudinal sectional view, and in FIG. 23 in a rear view. Further, FIGS. 21,  22  and  23  show an additional locking possibility. This relates to a head pin  76  which is arranged approximately in the center of the actuating lever  128  and which may be mounted so as to be rotatable in a countersunk opening  78  of the actuating lever  128 . The free end of the pin  76  has a cross-pin  80  which can be received in a determined position of the head pin  76  when the actuating lever  128  is swiveled into an opening  82  of the dish  118 . The area of the dish  118  forming this opening  82  juts out somewhat so that back-engagement surfaces  84  are formed, wherein the ends of the pin  80  lie behind these back-engagement surfaces  84  when the head pin  76  is rotated by 90°. Accordingly, this is a kind of quarter-turn closure which makes it possible to lock the actuating lever  128  in its swiveled in position by means of this head pin  76 . A torque spring provides for automatic locking, and opening is carried out against spring pressure by a screwdriver (or a socket wrench if the head is shaped differently). The rotation of the head pin  76  into and out of the locking position can be carried out by means of a tool, in this case, a screwdriver, not shown, which is inserted into a slot  86  of the head pin  76 . However, this purpose can also be met by a bar or a swivelable tongue when it can be moved against spring force by a cam or a connection which is rigid with respect to rotation, possibly with freewheeling. 
     According to FIGS. 1 and 3, the dish has a protrusion  88  which extends through the door leaf  16  where it is part of a lock shaft support and, e.g., according to FIG. 1, communicates with a lock case, wherein the door leaf  16  is clamped between the lock case and the dish  18  so that the dish is held firmly. The opening provided in the door leaf for this purpose is rectangular in this case, similar to that required in the construction according to the above-cited European Patent 0 261 267. 
     According to FIG. 3, a construction is provided in which a disk  13  is provided instead of a lock case, wherein the sash tongue  22  on the one hand and projections for the articulation of the round rods  26  on the other hand proceed from this disk  13 . 
     In the lock case  11  (which is constructed in a two-part manner in this instance), there is mounted a pinion which drives the driving rods  24  and which is driven in turn by the lock shaft  20  at which the actuating lever  28  is articulated such that it can swivel out (see FIG.  6 ). According to the present embodiment form, the lock case  11  is fastened to the dish  18  by means of screws  15  which project freely through openings  19  formed by the lock case  11  and which are then screwed into somewhat narrower bore holes  17  formed by the dish  18 . The dish material is usually made of plastic, so that it is possible to cut a thread into the bore hole  17  with appropriately shaped fastening screws, so that it is not necessary to insert threaded bore holes beforehand. 
     When the lock case  11  is securely screwed to the dish  18 , the edge area of the opening is clamped in the door leaf as can be seen in FIG.  5 . Similarly, the protrusion  87  of the dish  18  extending through the door leaf  14  is enclosed at the other end of the dish by means of a cover  25 , wherein the protrusion  87  also forms the above-mentioned back-engagement surface  16  for the hook device  58 . Openings  19  are also provided in the cover  25 , wherein fastening screws can be inserted through the openings  19  so as to dig into the bore holes  17  of the dish  18  so that the cover can be fastened to the dish  18 . In this connection, the edge area of the opening is again clamped in the door leaf  14  between the edge or end face  27  of the cover  25  and the shoulder  29  of the dish  18  which projects out in the manner of a flange, so that the entire arrangement is securely held. 
     It is further noted that the head of the fastening screw  15 , not shown in FIG. 9, can be received within a recess  31  formed by the cover  25  or by the lock case  11 ; annular protrusions  33  on which the support surface of the screw head is supported and forms a seal can also be seen in the area of this recess  31 . 
     While FIG. 8 shows the hook device  58  in the closed state, FIG. 9 shows the arrangement after the user has grasped the user surface  64  and accordingly swiveled the actuating hook  58  in the counterclockwise direction. In this way, the hook is released from the back-engagement surface  60  of the dish  18  and the actuating lever  28  can therefore be swiveled up out of the dish. When the user lets go of the actuating device, the pressure spring  68  presses against the spring receptacle  72  of the hook device  58  and rotates the latter about axis  62  in the clockwise direction until the surface  47  of the hook device  58  abuts against the stop surface  49  of the dish  18 . 
     When moved in the opposite direction, i.e., when the hand lever  28  is pressed into the dish, a diagonal surface  51  of the hook end  53  encounters the diagonal surface  55  of the dish  18 , so that the hook device  58  is again swiveled in the counterclockwise direction about axis  62  until the hook end  58  moves into the back-engagement position  60  and the hook is moved in the clockwise direction and is locked. It has then returned to the position shown in FIG.  8 . 
     FIG. 7 shows how the hook device  58  which is swivelable about axis  62  is engaged by the free end of the actuating lever  28  in a U-shaped manner so that a particularly secure support is made possible. 
     The embodiment form shown in this case requires that the hook device  58  can move freely when the actuating lever  28  is pressed into the dish, that is, for example, so that the actuating lever  28  is not pressed in as the result of pressing on the surface  55  of the hook device  58 . In this case, it could happen that the diagonal surface  51  of the hook does not clear the diagonal surface  55  of the dish because it is unable to deflect in the counterclockwise direction due to the pressure on the surface  55 . 
     On the other hand, the user tends to grasp the actuating lever  28  at its free end and press it into the dish. The embodiment form shown in FIGS. 10 to  14  more closely accounts for this situation. 
     According to FIGS. 10 to  14 , the end  157  of the hand lever  28  is fixedly connected with the hand lever  28  and thus does not influence the movement of the hook device  158 . Therefore, in this embodiment form, the hand lever can be grasped at its free end  154  and pressed into the dish without the sliding movement of the diagonal surfaces  151  of the hook end  153  along the diagonal surface  155  of the dish  18  being impeded by the pressing forces acting on the hook device  158 . On the contrary, if the user&#39;s thumb were to slide over the surface of the end  157  of the hand lever  128  in the direction of the pressing surface  170 , the deflecting movement would even be reinforced. 
     Similarly, it is also possible in this case to carry out unlocking in a simple manner, although an actuating surface facing the door handle surface is not available for the hook device  158  in this embodiment form. Instead, a pulling surface  164  is provided which can simultaneously pull the actuating lever  128  out of its swiveled in position, namely, for example, with the surface of the index finger, when the surface  170  is actuated, e.g., by means of the user&#39;s thumb. That is, in this case, the close spatial relationship between the pulling surface  164  and the pressing surface  170  makes it possible to achieve the action, according to the invention, by which the swivel lever  128  can be unlocked and also pulled out of its swiveled in position by one hand action. This is not possible in the prior art. 
     Another even more advantageous embodiment form is shown in FIGS. 15 to  19 , in which the hook device  258  is arranged in such a way that a freewheeling action results. The hook end  253  and hook swivel axis  262  are arranged at approximately the same point as shown in the embodiment form according to FIG.  8 . The pressure spring  268  is accommodated in a pocket which is formed in the hook device and in which one end is supported, while the other end of the pressure spring  268  is supported at a contact surface formed by the dish  18 . The lever  266  forming the pressing surface  170  forms a back-crosspiece  263  which contacts the surface  267  of the hook device  258  when lifting by means of pressing on the surface  264  of the lever  266  and swivels the hook device  258  in the counterclockwise direction about the shaft  262 . 
     When the swiveled out actuating lever  28  is swiveled into the dish  18  again, the diagonal surface  251  of the hook end  253  can slide along the diagonal surface  260  of the dish  18  and, in so doing, swivel the hook  263  in the counterclockwise direction without also having to swivel up the lever  266 . Rather, at this instant, the surface  267  is lifted from the crosspiece  263  as can be seen from FIG. 19, so that pressure exerted on the surface  170  for closing the hand lever does not cause a problem. 
     The embodiment forms shown in FIGS. 1 to  19  are installed in a door leaf which has two substantially rectangular openings that are preferably arranged symmetric to the center of the door. In the embodiment form according to FIGS. 21 to  24 , the dish  118  shown therein has a projection  188  having a circular outer cross section and an external thread, possibly with flattened portions  187 , so that the projection  188  can be used in circular openings in sheet-metal cabinet doors, which circular openings are provided with corresponding necked down portions. A fastening screw (cap nut or union nut) can then be placed on the projection  188  and the door leaf can be clamped between this nut and the dish support surface  118  as is shown in FIG.  25 . 
     FIGS. 20 to  23  show an example of how the arrangement according to the invention can be connected with a swivel lever that is lockable by means of a padlock. The eyelet  42  provided for the padlock  48  is carried by a projection  40  which can be formed integral with the dish  118 , but which, for purposes of strength (e.g., when the dish is made of plastic), can also be constructed in such a way that this projection  40  is a separate structural component part which is made of metal and has a base plate  92 . This base plate can be inserted into a corresponding recess  94  of the dish  118  from the rear in such a way that its surface area is aligned with the surface area of the dish  118  as can be seen in FIG.  22 . The edges of the base plate are then held by the protrusions  96  of the dish  118 . Alternatively, the projection  40  could also be injected into the material of the dish  118 . 
     The padlock  48  shown in FIG. 22 projects out diagonally, so that the lock is more easily accessible. On the other hand, this lock  48  does not impede access to the hook device  358  because prior to the actuation of this hook device  358  by pressing on surface  364  or surface  370  this padlock is removed in any case in order to make it possible to swivel out the swivel lever  128  at all. 
     But in case this jutting out of the lock  48  is troublesome for some other reason, the embodiment forms shown in FIGS. 24 to  26  and  27  can be selected. The main difference between this embodiment form and those shown in FIGS. 20 to  23  consists in that the projection  140  is relocated to the lower end of the dish  218  so that the padlock  48  has room to hang down freely. The lower end  65  of the actuating lever  228 , with reference to the Figures, is bent away somewhat from the door leaf  14  and the dish and accordingly makes it easier to pull the actuating lever  228  out of its swiveled in position while at the same time actuating the hook device  158 , which can be accomplished with one hand. Of course, this pulling out will only be carried out after the padlock  48  has been removed from the eyelet  142 . 
     The eyelet  142  is designed in this case in such a way that it is formed by a projection  140  with a base  192  whose shape can be similar to that of the protrusion  188  in which the lock shaft  32  is supported, that is, with an external thread and, if required, two or four flattened portions, wherein a fastening nut  190  can be screwed onto the external thread so that the door leaf  14  is clamped between the fastening nut  190  and the dish  218 . The dish  218  is held in turn by a ring  193  which is formed by the base  192  and is received in a corresponding recess  194  in the interior of the dish. 
     The advantage of the construction shown in FIGS. 24 and 25 is, for one, the greater stability provided by fastening by means of two protrusions  188 ,  192  which project over the support surface of the dish and which are provided with a union nut  90  and  190 , respectively, and, on the other hand, the fact that the padlock  48  does not project out as much. 
     Another advantage consists in that the closure can be used as a left-hand closure or a right-hand closure in case the openings for the protrusions are arranged symmetric to the center of the door. Similar advantages also apply to the embodiment forms in which two rectangular openings are provided. 
     It is noted that the inner area of the switch cabinet can be sealed relative to its outer area by means of sealing rings  95  between the outer surface of the door leaf and the dish in the area of the protrusions  188  and  192  insofar as the shaft  32 , at which the hand lever actuator  228  is articulated at  30  and to which the sash  22  may be fastened by screws  21 , is ouffitted with an O-ring seal  23 . 
     FIG. 27 shows a somewhat modified embodiment form in which the projection  240  is supported by the dish  318  in a similar manner to the projection  40  according to FIG. 22 instead of by fastening with a union nut  90 . The dish  318  itself is held at the upper end by a nut  90  similar to FIG. 26, but is held at its lower end by a screw bolt  91  which is arranged with its bolt head on the back of the door leaf  14  and whose threaded part extends into a corresponding threaded bore hole  89  inside the material of the dish  318 . 
     While the eyelet of the protrusion  140  projects beyond the surface of the actuating lever  228  by a distance a in the embodiment forms in FIGS. 24 to  27 , this is no longer the case in the present embodiment form shown in FIGS. 28 to  31 . The projection  340  is shorter and accordingly makes it possible for the actuating lever  428  and the dish  418  to be recessed more deeply for the shackle of the padlock  48  than was the case in the preceding embodiment forms. Additional space is created in that the front area  465  of the actuating lever  428  extends into a recess  497  of the dish  418  and accordingly retains sufficient material strength. The upper area of the eyelet  340  accordingly no longer projects over the upper surface of the actuating lever  428 . 
     The padlock  48  also remains below the alignment line of the front surface of the swiveled in actuating lever, resulting in an extremely flat embodiment form. 
     This extremely flat version is particularly well-suited to be arranged in flush paths because there are no projecting parts to impede persons passing by quickly. In this case, also, the end of the hand lever  428  projects out so that the actuating surface of the hook device  458  can be actuated and the actuating lever can be pulled out of its dish at the same time by one hand action. 
     The arrangement according to the invention can also be used in closures which are actuated already when the actuating lever is swiveled out of the dish, that is, which do not require subsequent turning of the swivel lever. 
     The invention can be applied commercially in switch cabinet construction. 
     While the foregoing description and drawings represent the present invention, it will be obvious to those skilled in the art that various changes may be made therein without departing from the true spirit and scope of the present invention.