EP0421013B1 - Fastener for a switchbox in three parts - Google Patents

Abstract

The invention relates to a fastener for a three-part switchbox consisting of a basic box, pivoting frame (20) and viewing-window box (10), having a lock plate (11) arranged in the front face of the viewing-window box, with a first lock element (12). The handling of the fastener from the front side of the switchbox only is obtained in that the actuating element of the first lock element (13) is coupled fixedly in terms of rotation to a first locking insert (14) which is mounted rotatably in the rear face of the viewing-window box and is equipped with a locking extension (16) and which can be introduced (21) into a first locking receptacle, arranged on the front face of the pivoting frame, and can be locked therein by rotation, in that adjacent to the first locking receptacle the front face of the pivoting frame carries a first bearing receptacle for a second lock element (13'), the actuating element of which is coupled fixedly in terms of rotation to a driving rod (26), in that the driving rod is connected to a second locking insert mounted rotatably in a second bearing receptacle in the rear face of the pivoting frame, and in that the second locking insert can be introduced with its locking extension into a second locking receptacle arranged on the front face of the basic box and can be locked therein by rotation. <IMAGE>

Description

The invention relates to a closure for a three-part control cabinet consisting of a basic box, swivel frame and window box with a lock plate arranged in the front of the window box with a first lock element.

With the first lock element, the connection between the window box and the swivel frame can be released, so that the window box, which is articulated on the swivel frame, can be pivoted. The swivel frame hinged to the basic box can be brought into a closed position via a further lock. This closure is usually arranged in the separating area between the swivel frame and the base frame and is therefore often very difficult to access, especially when several control cabinets are arranged next to one another and attached to a wall.

It is an object of the invention to provide a closure of the type mentioned at the outset which allows both the loosening of the connection between the viewing window box and the swivel frame and also the loosening of the connection between the swivel frame and the basic box, even if the control cabinet is only from the front is accessible from.

This object is achieved according to the invention in that the actuating element of the first lock element with a rotatably mounted in the rear of the window box first Locking insert is non-rotatably coupled, which is provided with a locking projection and can be inserted into a first locking receptacle attached to the front of the swivel frame and can be locked by twisting therein that, following the first locking receptacle, the front of the swivel frame carries a first bearing receptacle for a second lock element, the Actuating element is rotatably coupled to a driver rod, that the driver rod is connected to a second locking insert rotatably mounted in the rear front of the swivel frame in a second bearing receptacle, and that the second locking insert with its closing projection can be inserted into a second locking receptacle attached to the front of the basic box and can be locked by twisting it.

The first locking receptacle on the swing frame and the locking insert in the window box establish the connection between the window box and the swing frame. In the simplest case, the rotary movement for the locking insert is derived via the actuating element of the first lock element, which can be actuated using a key. If the window box is pivoted away from the swivel frame, then the second lock element, which is arranged in the first bearing receptacle, is accessible via the first locking receptacle in the region of the front of the swivel frame. With the actuating element of the second lock element, the driver rod can be rotated, which also adjusts the second locking insert, which is rotatably mounted in the area of the rear front of the swivel frame in the second bearing receptacle and with the second locking receptacle in the area of the front front of the basic box, the connection between the swing frame and manufactures or releases the basic set. The second lock element is always accessible when the window box is opened and pivoted. The control cabinet therefore only needs to be accessible from its front.

An advantageous embodiment is characterized in that the first lock element in the lock plate and the second lock element in the first bearing seat of the swivel frame are of identical design. If both lock elements are designed for key actuation, then with one and the same key the viewing window box on the swivel frame and the swivel frame on the basic box can be released for swiveling and prevented from doing so again.

In order to keep the expense of various components within limits, a further development provides that the first locking insert in the viewing window box and the second locking insert in the second bearing receptacle of the pivot frame are of the same design and that the first locking receptacle on the pivot frame and the second locking receptacle on the Basic box are of the same design.

In addition, the closure can be simplified in that the first bearing seat for the second lock element and the second bearing seat for the second locking insert are of the same design.

For the rotationally fixed coupling between the actuating element of the second lock element in the swivel frame and the driving rod, according to one embodiment it is provided that the actuating element of the second locking element is connected in a rotationally fixed manner to a driving sleeve which receives a square receiving element in a rotationally fixed manner, and that the driving rod, which is round in cross section, cannot be rotated with the Square receiving element is connected.

According to a further embodiment, it is provided that the first locking receptacle on the outside and the first Bearing receptacle for the second lock element on the inside of a wall forming the front of the swivel frame are fixed together, then the assembly effort can be reduced.

The insertion and locking of the locking inserts in the locking receptacles is facilitated and accomplished in that the first and the second locking receptacles have a receiving sleeve with a conically widening insertion opening and that the receiving sleeves each pass into a fastening plate with fastening bores via a locking shoulder for the closing attachment of the locking insert.

For turning the first locking insert, a higher torque can be applied in that the first locking insert in the viewing window box is coupled to a rotary handle that can be swiveled in and out of the viewing window box, that the rotating handle by means of a rotatably mounted trigger against the action of a spring in the pivoted position is maintained, and that a toggle lever controllable by means of a locking cylinder releases the trigger and thus the twist grip only in the opening position of the locking cylinder. The twist grip can only be gripped after opening the locking cylinder, since the spring automatically swings out the twist grip. If the locking cylinder is brought into the closed position, the turning handle can be swiveled in and locked.

• Fig. 1 den Teil des Verschlusses zwischen dem Sichtfensterkasten und dem Schwenkrahmen,
• Fig. 2 den Teil des Verschlusses zwischen dem Schwenkrahmen und dem Grundkasten und
• Fig. 3 eine andere Ausgestaltung des Verschlusses in dem Sichtfensterkasten.

The invention is explained in more detail with reference to exemplary embodiments shown in the drawings. It shows, in each case on average:

• 1 shows the part of the closure between the window box and the swivel frame,
• Fig. 2 shows the part of the closure between the swing frame and the basic box and
• Fig. 3 shows another embodiment of the closure in the window box.

As shown in FIG. 1, the window box 10 is arranged in front of the swivel frame 20 and articulated to it in a manner not shown, so that it can be swiveled relative to the latter. The articulation side is in the area of one vertical side and the closure in the area of the other vertical side of the control cabinet.

In the front front 12 of the window box 10, the lock plate 11 is inserted, which receives the first lock element 13, the actuating element can be rotated by means of a key. The first locking insert 14 is rotatably supported in the region of the rear front of the window box 10, which is indicated by a wall, as the bearing bush 15 shows. The first locking insert 14 is rotatably coupled to the actuating element of the first lock element 13 so that it is rotated with the latter. The first locking insert 14 carries the closing projection 16 and is inserted into the first locking receptacle 21 when the viewing window box 10 is pivoted in, which is attached in the region of the front of the pivot frame 20. This first locking receptacle 21 has a receiving sleeve with a conically widening insertion opening. The receiving sleeve merges with the formation of the first locking shoulder 22 for the locking projection 16 of the first locking insert 14 into the fastening plate 28 with the fastening holes 29. The locking projection 16 is behind the locking shoulder 22 when the first locking insert 14 is rotated the first locking receptacle 21 clamped or the first locking insert 14 with the lock extension 16 is released for pivoting out the viewing window box 10.

With the first locking receptacle 21, the first bearing receptacle 27 is also attached to the front of the swivel frame 20. Since the locking receptacle 21 is fastened on the outside and the bearing receptacle 27 is fastened on the inside of the wall of the swivel frame 20 which forms the front, common fastening screws can be used. The front of the swivel frame 20 gives after the pivoting away of the window box 10 access to the second lock element 13 ', which is held in the first bearing seat 27 and the actuating element is rotatably connected to the driving sleeve 24. This driving sleeve 24 receives the square receiving element 25 non-rotatably, in which the round driving rod 26 is fixed non-rotatably. With the rotation of the actuating element of the second lock element 13 ', the driver rod 26 is also rotated.

The driver rod 26 is guided to the rear of the swivel frame 20 and there is non-rotatably coupled to the second locking insert 14 ', which is identical to the first locking insert 14. The second locking insert 14 'is rotatably mounted in the second bearing holder 27', which is formed like the first bearing holder 27 for the second lock element 13 '. At the front of the base box 30, the second locking receptacle 21 'is attached, which receives the second locking insert 14'. When twisting the locking lug 16 'takes over the connection between the swivel frame 20 and the base box 30 or it releases the second locking insert 14' for leading out of the second locking receptacle 21 'so that the swivel frame 20 can be pivoted relative to the base box 30 can. The mounting plate 28 'with the mounting holes 29' is used to attach the second locking receptacle 21 'to the wall forming the front of the base box 30.

3 shows another embodiment of the part of the closure in the region of the viewing window box 10. The coupling of the first locking insert 14 on the rear front of the viewing window box 10 with the first locking receptacle 21 on the front front of the swivel frame 20 remains the same. The lock plate 11 has changed, which now receives the rotary handle 34, which is pivotable about the bearing shaft 36 and is under the action of the spring 35. The rotary handle 34 is connected in a rotationally fixed manner to the first locking insert 14 via a coupling element. Via the rotary handle 34, the lock plate 11 receives the lock cylinder 31, the actuating element of which controls the toggle lever 32 which can be rotated about the axis 37. The toggle lever 32 in turn actuates the trigger 33 which can be rotated about the axis 38 and which holds the rotary handle 34 in the pivoted-in position as long as the locking cylinder 31 is in its closed position. If the locking cylinder 31 is brought into the open position, its actuating element pivots the toggle lever 32 into the dashed position. The trigger 33 is also adjusted and in the dashed position releases the rotary handle 34, which is brought into the pivoted-out position by the spring 35. The rotary handle 34 can be easily gripped and rotated to release the lock between the window box 10 and the swing frame 20. If the lock cylinder 31 is returned to its closed position, then the rotary handle 34 can be pivoted in, the trigger 33 holding this position, since it is released by the toggle lever 32 and returns to its starting position.

The viewing window box 10 and / or the basic box 30 can also be designed as cabinet doors which are hinged to the swivel frame 20 and can be brought into the closed position therewith.

Claims (11)

1. Closure for a three-part switchgear cabinet formed from base box (30), pivotable frame (20) and inspection window box (10), including a lock plate (11), which is disposed in the front end of the inspection window box (10) and is provided with a first lock member (13), characterised in that the actuating means for the first lock member (13) is non-rotatably connected to a first catch insert (14), which is rotatably mounted in the rear end of the inspection window box (10) and is provided with a locking extension member (16), said insert being insertable into a first catch holder (21), attached to the front end of the pivotable frame (20), and being lockable in said holder by means of rotation, in that, in addition to having the first catch holder (21), the front end of the pivotable frame (20) carries a first bearing holder (27) for a second lock member (13′), the actuating means for said second lock member being non-rotatably connected to an attachment rod (26), in that the attachment rod (26) is connected to a second catch insert (14′) rotatably mounted in the rear end of the pivotable frame (20) in a second bearing holder (27′), and in that the second catch insert (14′) is insertable, by its locking extension member (16′), into a second catch holder (21′), attached to the front end of the base box (30), and is lockable in said holder by means of rotation.
2. Closure according to claim 1, characterised in that the first lock member (13) in the lock plate (11) and the second lock member (13′) in the first bearing holder (27) of the pivotable frame (20) have identical configurations.
3. Closure according to claim 1 or 2, characterised in that the first catch insert (14) in the inspection window box (10) and the second catch insert (14′) in the second bearing holder (27′) of the pivotable frame (20) have identical configurations.
4. Closure according to one of claims 1 to 3, characterised in that the first bearing holder (27) for the second lock member (13′) and the second bearing holder (27′) for the second catch insert (14′) have identical configurations.
5. Closure according to one of claims 1 to 4, characterised in that the first catch holder (21) on the pivotable frame (20) and the second catch holder (21′) on the base box (30) have identical configurations.
6. Closure according to one of claims 1 to 5, characterised in that the first lock member (13) and the second lock member (13′) are provided so as to be actuated by a key.
7. Closure according to one of claims 1 to 6, characterised in that the actuating means for the second lock member (13′) is non-rotatably connected to an attachment sleeve (24), which non-rotatably accommodates a rectangular holder (25), and in that the attachment rod (26), having a circular cross-section, is non-rotatably connected to the rectangular holder (25).
8. Closure according to one of claims 1 to 7, characterised in that the first catch holder (21) and the first bearing holder (27) for the second lock member (13′) are mounted jointly on a wall, which forms the front end of the pivotable frame (20), the former on the external surface and the latter on the internal surface of said wall.
9. Closure according to one of claims 1 to 8, characterised in that the first and second catch holders (21, 21′) each have a receiving sleeve provided with a conically tapering insert aperture, and in that the receiving sleeves each extend beyond a catch shoulder portion (22, 22′) for the locking extension member (16, 16′) of the catch insert (14, 14′) and pass into a mounting plate (28, 28′) provided with mounting bores (29, 29′).
10. Closure according to one of claims 1 to 9, characterised in that the first catch insert (14) in the inspection window box (10) is connected to a rotatable handle (34), which is pivotable inwardly into the inspection window box (10) and outwardly therefrom, in that the rotatable handle (34) is retained in the inwardly pivoted position by means of a rotatably mounted releasing means (33) in opposition to the action of a spring (35), and in that a toggle lever (32), which is controllable by means of a lock barrel (31), exposes the releasing means (33) and hence the rotatable handle (34) only in the open position of the lock barrel (31).
11. Closure according to one of claims 1 to 10, characterised in that the inspection window box (10) and/or the base box (30) are or is adapted as cabinet doors which are pivotally mounted on the pivotable frame (20) and can be brought into the closed position with said frame.

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