ES2675552T3 - Security cabinet - Google Patents

Abstract

Safety cabinet, especially cabinet for hazardous materials, with at least two swing doors (2) coupled together to a coupling element (7) movable in a guide (6), the respective swing door (2) being coupled through respectively a pivot shaft (3) disposed by the edge of a cabinet body (1) to the cabinet body (1), the respective hinged door (2) of the two swing doors (2) also being coupled by means of respectively an articulated device (8, 9) proper to the coupling element (7), and the coupling element (7) being provided with two stops (10) on the side of the door for the respective articulated device (8, 9), and corresponding normal operation to a situation in which the coupling element (7) adopts and maintains its opening position and, consequently, its terminal position on the side of the door compared to the guide (6), mechanically decoupling, in case of a movement from opening or closing one of the swinging doors (2) during normal operation, the respective other swinging door (2) of the coupling element (7) when the articulated device (8, 9) moves from the swinging door (2) requested in the course of the opening or closing movement during normal operation in front of the coupling element (7) and the articulated device (8, 9) of the swinging door (2) requested during normal operation in the open position being adjusted of the swinging door to the stop (10), while the other swinging door (2) remains in its closed position, and with a spring unit (13) that applies the force to the two swinging doors (2) for at least during the closing operation in the direction of its closing position, the coupling element (7) passing during the closing operation from its opening position to a closing position along the guide (6) by means of the unit resor te (13), the corresponding swinging door (2) closed by means of the articulated device (8, 9) respectively adjusted to the stop (10) of the coupling element (7).

Description

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DESCRIPTION

Security cabinet

The invention relates to a safety cabinet, especially a hazardous materials cabinet, with at least two swing doors coupled together to a movable coupling element in a guide, the respective swinging door being joined through a rotation axis arranged respectively by the edge, rotatably, to a cabinet body and joining the respective hinged door of the two swing doors by means of an articulated device proper to the coupling element, and with a spring unit that at least in the closing operation it forces the two swinging doors to a force, the coupling element moving in the closing operation from its opening position to a closing position along the guide.

Safety cabinets and, in particular, cabinets for hazardous materials normally serve for the storage of hazardous substances, in most flammable cases, such as chemicals, flammable liquids, etc. In this context, one of the important aspects is that the safety cabinet in question closes perfectly during the closing operation. This is done by the spring unit which, in the automatic closing operation or in case of fire, guarantees that the two swing doors close securely and automatically. However, for normal operation, manual and / or motor and non-automatic opening and closing are provided.

In the state of the art according to DE 20 2004 004 855 U1 a security cabinet is described whose two hinged doors are respectively coupled to one of the ends of a synchronized lever. Opposite ends of the synchronized lever are articulatedly coupled through a coupling element.

The coupling element can be moved in a guide. As a result, swing doors can be opened and closed in a synchronized manner.

The safety cabinet according to EP 2 017 420 A1 is comparable. Also in this case two hinged doors are coupled together to a movable coupling element in a guide. The spring unit ensures, at least during the closing operation, that a force in the direction of its closing position is applied to the two swinging doors. During normal operation the spring unit disengages from the coupling element and only applies the force to it in the closing operation. This ensures reliable operation of the spring unit in closing operation in all circumstances.

EP 2 221 438 A2, relevant as a state of the art, which discloses a security cabinet of the embodiment described above, also deals with a safety cabinet in which the spring unit maintains during normal operation, is that is, in case of opening and closing movements caused (manually) by the swinging doors, permanently its tensioned position. The spring unit also has a drag element that only interacts with the swing doors during closing operation, for example in case of fire. In this context the swing doors can also be coupled during normal operation respectively to a coupling element itself during two-handed operation. In this way, the swing doors can now be operated independently of each other, however they close together with the help of the spring unit in the closing operation. However, the construction chosen in this case is technologically complicated, so it requires improvements.

The invention is based on the technical problem of perfecting a security cabinet in the manner initially described so that with perfect functionality and especially maintaining the possibility of being able to apply the force individually to the respective swinging door during normal operation, a Safe closing operation with a simple overall constructive design.

For the solution of this technical problem, a safety cabinet according to claim 1 is provided.

In general, the opening or closing movement of the swing door in question is carried out during normal operation by hand and / or by motor. In most cases, manual operation and application of manual force to the swing door are considered. According to the invention, it is always guaranteed that the hinged door, which in comparison with the manually requested swing door is not subjected to force, is mechanically disengaged from the coupling element. In most cases, a (single) coupling element is used, from which the hinged door in question is mechanically disengaged during the described procedure.

This ensures that, respectively, only the desired swing door can be opened or closed manually, while the opening / closing movements do not influence the other swing door. This is achieved by mechanical decoupling of the coupling element. However, it is also guaranteed that in case of closing operation, that is, for example in case of fire, the force is applied in the closed position to the two swinging doors with the help of the spring unit.

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To achieve this in detail, the respective swing door of the two swing doors is respectively coupled by means of an articulated device proper to the coupling element. The articulated device is essentially composed of an articulated coupling arm rotatably coupled to the (single) coupling element and additionally of an articulated door arm rotatably coupled to the swinging door. That is, the articulated device for coupling the respective swinging door to the coupling element is designed in most cases in two pieces and is composed of the articulated coupling arm and the articulated door arm already mentioned.

The two articulated arms are joined together in an articulated manner. In addition, the articulated coupling arm is articulated or pivotally coupled to the coupling element. Something similar occurs with the articulated door arm that is pivotally coupled to the swinging door.

In order to implement the desired functionality of a possible manual individual drive of the respective swing door during normal operation, the hinged door articulated device requested in the course of the opening movement is adjusted in the normal operation to the top of the control element. coupling According to the invention, two stops are provided in the coupling element for the respective articulated device. In the case of the stops, according to the invention, there are stops on the side of the door, that is, stops connected to the coupling element towards the swinging door.

For this purpose the coupling element is shaped in most cases symmetrical compared to the central guide. It has also been found that the stops are essentially arranged at right angles compared to a coupling plate. In this case the coupling plate and the two stops on the side of the door can be manufactured practically at the same time. In fact, the coupling element has the coupling plate in question which is generally provided with pivot axes for the rotating coupling of the respective articulated device. It is also advantageous that the couplings in question form an obtuse angle to each other.

In this way the design is chosen together so that the coupling device, which respectively couples the swinging door to the coupling element, is adjusted in the opening position of the respective swinging door to the corresponding stop on the side of the element door of coupling. The closing position of the swinging door, on the other hand, generally serves for the articulated device in this case to be separated at a right angle from the stop on the side of the door in question.

The design is also chosen so that the hinged door hinged device requested during the opening or closing movement (during normal operation) changes position in front of the coupling element. That is, normal operation serves to keep the coupling element in its opening position. This opening position of the coupling element (in normal operation) corresponds to a terminal position of the door compared to the corresponding guide. In other words, in the open position (during normal operation) the coupling element is directly next to the swinging door (closed), in a certain way opposite.

The coupling element adopts this opening position continuously during normal operation. When the coupling element changes to the closed position along the guide, the closing operation corresponds to it, for example in case of fire. During the closing operation the coupling element passes from its opening position to the closing position along the guide. To do this, one or both swing doors are closed at the same time, assuming they were open.

In most cases the closing position of the coupling element and therefore the closing operation, for example in case of fire, correspond to an approximately central position of the coupling element compared to the guide already mentioned. The longitudinal extension of the guide in question follows the opening / closing direction of the coupling element. In general, the coupling element extends transversely in front of the guide. As explained above, the opening position of the coupling element corresponds to the terminal position on the side of the door compared to the guide.

In this way the force can be applied to the respective swing door individually and independently of the other swing door, for example by hand, specifically during normal operation. In fact, an opening process of the hinged door in question serves during this normal operation so that the articulated device moves in front of the coupling element. The articulated device in fact performs an angular movement away from the respective stop of the coupling element. The coupling element remains still. The same applies to the other swinging door mechanically decoupled from the coupling element in question.

In the opening position of the manually requested swing door, it rotates or opens at least 90 ° in front of a corresponding cabinet body. As said before, the coupling element maintains its opening position. Logically, if necessary, larger opening angles can also be made. The hinged closed hinged door device is still adjusted without variations to the top of the coupling element.

The coupling element remains in its opening position in normal operation until the spring unit is activated. In fact, the coupling element is fixed in its opening position and in its position

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Door side terminal. Only during closing operation is the fixation canceled. This is done in case of fire a fuse that dissolves thermally. In this way the spring unit can move the coupling element to its closed position along the guide.

In case of fire, that is to say in the closing operation, the spring unit acting on the coupling element therefore ensures that an open swing door or the two open swing doors are closed. Actually the spring unit applies the force to the coupling element so that it passes from the terminal or opening position previously adopted in comparison with the guide to the closed position and, consequently, to the approximately central position already described in comparison With the guide. Since the hinged door respectively open is adjusted with its articulated coupling arm to the stop on the door side of the coupling element, the application of force linked to the closing operation to the coupling element from the terminal position of the door side in Comparison with the guide or from the opening position to the closing position with a central position of the coupling element compared to the guide, ensures that the hinged door is respectively opened.

Through the articulated device adjacent respectively to the stop of the coupling element a closing force is exerted on the corresponding swinging door which, by means of the spring unit, passes from its opening position to the closing position. This ensures that during the closing operation the safety cabinet according to the invention is in any case closed and that the hazardous materials inside it are stored safely, even in case of fire. Here you can see the essential advantages.

The invention is explained in more detail below in view of a drawing that represents a single embodiment. It can be seen in the:

Figure 1 the safety cabinet according to the invention with hinged doors respectively closed during closing operation;

Figure 2 the object according to figure 1 with a swinging door open during normal operation.

The figures show a safety cabinet and especially a cabinet for hazardous materials that has a cabinet body 1 to which swing doors 2 are attached. The respective swing door 2 is coupled through a pivot axis 3, arranged respectively at the edge of the cabinet body 1, the cabinet body 1. Both the cabinet body 1 and the corresponding hinged door 2 have an inner lining 4, 5 which can be made of plates of non-flammable or hardly flammable material. It is recognized that in this case two hinged doors coupled together to a movable coupling element 7 have been made in a guide 6.

In view of the figures, it is further recognized that the coupling element 7 has been configured essentially axially symmetrically compared to the central guide 6. The coupling element 7 also extends essentially transversely with respect to the longitudinal extension of the guide 6. On the other hand, the guide 6 is configured and arranged so that it extends along a closing movement indicated by means of an arrow in Figure 2 of the corresponding hinged door 2 with respect to the coupling element 7 Logically, the same can be said in relation to the direction of opening in the opposite direction.

The coupling element 7 can engage with a set of rollers, a core, a sword-shaped element. etc. in the guide 6 provided in the example of realization of two rails with a central recess. In any case, the coupling element 7 experiences along the guide 6 a linear displacement when the coupling element 7 passes from its opening position traditionally adopted during normal operation in the terminal position of the door side facing the guide 6 according to figure 2, to the closing position with a central arrangement in front of the guide 6 according to figure 1. The closing position of the coupling element 7 according to figure 1 corresponds to the closing operation, for example with a fire.

In this closed position of the coupling element 7 the coupling element adopts an approximately central position compared to the longitudinally extended guide 6. On the other hand, the opening position of the coupling element 7 and, consequently of the normal operation, represented in Figure 2, corresponds to the coupling element 7 adopting its terminal position on the side of the door with respect to the mentioned guide 6.

The respective hinged door 2 is coupled with the aid of an articulated device 8, 9 to the coupling element 7. In fact, the articulated device 8, 9 is composed of an articulated coupling arm 8 rotatably coupled to the coupling element 7 and of an articulated door arm 9 rotatably connected to the corresponding hinged door 2. The articulated coupling arm 8 and the articulated door arm 9 are in turn articulated together.

During normal operation the articulated device 8, 9 of the swing door 2 requested during the opening movement is adjusted to a stop 10 of the coupling element 7 (compare the left swing door 2 of Figure 2). In fact, the coupling element 7 is provided with two stops on the door side 10 for the respective articulated device 8, 9. The stops 10 in question are essentially coupled at right angles to a coupling plate 11 as a component part of the coupling element. 7. In this sense the

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Coupling plate 11 in question and the corresponding stops 10 can be manufactured in a particularly simple and economical manner, specifically by metal stamping / bending processes.

The coupling plate 11 is provided with pivot axes 12 with the aid of which the respective articulated device 8, 9 is rotatably coupled to the coupling element 7. In fact, the respective articulated coupling arm 8 is coupled with the aid of the axes rotating 12 rotatably to the coupling element 7 or its coupling plate 11. It is seen that the two stops 10 together form an obtuse angle.

Of particular importance for the invention is the fact that in an opening or closing movement of a swinging door 2 during normal operation, the respective other swinging door 2 is mechanically disengaged from the coupling element 7. The opening or closing movement Closing of the corresponding swinging door 2 during normal operation occurs in the exemplary embodiment manually. In principle, an opening or closing movement of the swinging door 2 initiated by motor is also possible.

The operation is as follows: starting from a closed position of the two swing doors 2 in normal operation according to figure 2, it is recognized that an opening movement of the in this case left swing door 2 corresponds to a relative movement of the articulated device 8 , 9 in front of the coupling element 7. The coupling element 7 maintains its opening position during normal operation according to Figure 2, that is, it is held in the terminal position compared to the corresponding guide 6. In this opening position, the coupling element 7 is fixed. A thermally dissolving fuse can be charged in case of fire.

When the hinged door 2 in question, in the exemplary embodiment, the left hinged door 2, is opened manually, the corresponding articulated device 8, 9 passes from its previously adopted position and expanded at an angle compared to the coupling element 7, a a position that in the example corresponds to an adjustment of the articulated device 8, 9 corresponding to the left stop 10. Once the stop 10 has been reached, this circumstance also gives rise to a possible opening angle of the swinging door 2 being limited at about 90 ° in front of the cabinet body 1 in the example according to figure 2. Of course, it is only an example.

In the described opening movement of the swinging door (left) 2 the coupling element 7 maintains, as described, its opening position in the terminal position on the side of the door in front of the guide 6. This corresponds to the normal functioning. The swinging door (right) 2 remains in its closed position instead. This is possible since the corresponding articulated device 8, 9 of the closed swinging door 2 continues to distance itself from the corresponding stop 10. In fact, the articulated coupling arm 8 moves during the passage from the open position of the swinging door 2 from its position adjacent to the stop 10 to the angled distance position, as can easily be seen in a comparison of the two swinging doors. 2 during the normal operation of Figure 2. The two swing doors 2 can be operated independently of each other, since they are free and in some ways mechanically disengaged from the corresponding coupling element 7.

The closing operation, for example in case of fire, results in the operation of the spring unit 13. This is possible because in case of fire the fire protection fuse, which fixes the coupling element 7 in the open position or in the terminal position on the side of the door in front of the guide 6, it dissolves thermally. As a consequence, the spring unit 13 can pull the coupling element 7 in the direction of the back of the cabinet along the guide 6. At the same time the coupling element 7 passes from the opening position according to figure 2 , to the closing position according to figure 1. This corresponds to the closing operation.

During this process the two swing doors 2 close simultaneously, assuming they were open. If in the movement of the coupling element 7 from its opening position according to Figure 2 to the closing position according to Figure 1 in the direction of the back of the cabinet one or both swing doors 2 are open, this movement of the element of coupling 7 ensures that the swinging door 2 in question closes.

In the hinged door 2 respectively open the articulated device 8, 9 is adjusted to the stop 10, whereby a closing movement or the passage of the coupling element 7 from the opening position according to Figure 2 to the closing position according to the Figure 1 corresponds immediately to a request for the swinging door 2. As a result, in case of closing or fire operation the two swinging doors 2 are closed.

If one or both swing doors 2 have already adopted their closing position in this closing operation, the coupling element 7 moves with the aid of the spring unit 13 along the guide 6, without the swinging door 2 in question experience a solicitation. In this process the articulated coupling arm 8 only moves from its angular position until it fits to the stop 10 of the coupling element 7. And it is here that the essential advantages are to be seen.

Claims (9)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 1. Safety cabinet, especially cabinet for hazardous materials, with at least two swing doors (2) coupled together to a coupling element (7) movable in a guide (6), the respective swing door (2) being coupled through respectively a pivot shaft (3) disposed by the edge of a cabinet body (1) to the cabinet body (1), the respective swinging door (2) of the two swinging doors (2) also being coupled by means of respectively a articulated device (8, 9) proper to the coupling element (7), and the coupling element (7) being provided with two stops (10) on the side of the door for the respective articulated device (8, 9), and corresponding a normal operation in a situation where the coupling element (7) adopts and maintains its opening position and, consequently, its terminal position on the side of the door compared to the guide (6), mechanically decoupling, in case of a movement for opening or closing one of the swing doors (2) during normal operation, the respective other swing door (2) of the coupling element (7) when the articulated device (8, 9) moves from the swing door (2 ) requested during the opening or closing movement during normal operation in front of the coupling element (7) and the articulated device (8, 9) of the swinging door (2) requested during normal operation in the position of opening the swinging door to the stop (10), while the other swinging door (2) remains in its closed position, and with a spring unit (13) that applies the force to the two swinging doors (2) at least during the closing operation in the direction of its closing position, the coupling element (7) passing during the closing operation from its opening position to a closing position along the guide (6) by means of the unit of re spring (13), the corresponding swinging door (2) closed by means of the articulated device (8, 9) respectively adjusted to the stop (10) of the coupling element (7). 2. Cabinet according to claim 1, characterized in that the opening or closing movement of the swing door (2) occurs during manual operation manually and / or by motor. 3. Cabinet according to claim 1 or 2, characterized in that the articulated device (8, 9) is essentially composed of an articulated coupling arm (8) rotatably coupled to the coupling element (7) and an articulated arm of door (9) rotatably coupled to the swinging door (2). A cabinet according to one of claims 1 to 3, characterized in that the closing position of the coupling element (7) corresponds to an approximately central position compared to a longitudinally extended guide (6). 5. Cabinet according to one of the preceding claims 1 to 4, characterized in that the coupling element (7) is symmetrically configured compared to the central guide (6). A cabinet according to one of claims 1 to 5, characterized in that the coupling element (7) has a coupling plate (11) with pivot shafts (12) for rotating coupling of the respective articulated device (8, 9) . 7. Cabinet according to claim 6, characterized in that the stops (10) are arranged essentially at right angles in the coupling plate (11). 8. Cupboard according to one of claims 1 to 7, characterized in that the stops (10) form an obtuse angle. 9. Cabinet according to one of claims 1 to 8, characterized in that the articulated device (8, 9) is distanced in the closed position of the respective hinged door (2) at an angle to the stop (10).