Drawer cabinet and drawer for use in such a drawer cabinet

Abstract

The invention relates to a drawer cabinet (1) with a cabinet body (7) configured to hold a plurality of drawers (3) movable between a closed position and an open position, wherein the drawer cabinet (1) has a locking mechanism (5) configured to selectively lock the plurality of drawers (3) as a whole in a locking position of the locking mechanism (5) and to release them in an unlocking position of the locking mechanism (5), wherein the locking mechanism (5) is configured to provide individual drawer-extension protection in the unlocking position, and wherein the drawer cabinet (1) additionally has a release device (9) configured to release at least one drawer (3) of the plurality of drawers (3) to be opened by bypassing the locking mechanism (5).

Description

[0001] The invention relates to a drawer cabinet and a drawer for use in such a drawer cabinet.

[0002] In drawer cabinets with multiple drawers, it is known to provide an individual drawer extension safety device that prevents a further drawer from being extended when one drawer is already extended. This is intended, in particular, to ensure that the drawer cabinet cannot tip over due to excessive torque projecting from the extended drawers, which could potentially injure an operator or damage valuable contents. This is especially relevant for drawer cabinets containing heavy items, such as professional tools, precision tools, or specialized tools. A drawer cabinet with such an individual drawer extension safety device is known from WO 96 / 25577 A1 and DE 10 2015 205 018 B3.The problem is that to access a single drawer, all drawers must be unlocked globally, and the individual drawer lock only engages once one drawer is opened. This means that a user—perhaps unknowingly—could theoretically open multiple drawers simultaneously, causing the cabinet to tip over. Another issue with such cabinets is the lack of access control, which prevents a specific user from opening only certain drawers, or even just one, based on their authorization or authentication. This is because, in the global unlocked state, all drawers are always accessible, at least initially.Access control options for such drawer cabinets are generally only achievable in a complicated manner, requiring the abandonment of global unlocking and the replacement with individual locks – possibly electronic – for each drawer. This is complex and expensive, and in an emergency, such as a power outage, it is no longer possible to revert to global unlocking of all drawers.

[0003] The invention is therefore based on the objective of creating a drawer cabinet and a drawer for use in such a drawer cabinet, in which the aforementioned disadvantages are at least reduced, or preferably do not occur.

[0004] The problem is solved by providing the present technical teaching, in particular the teaching of the independent claims as well as the embodiments disclosed in the dependent claims and the description.

[0005] The problem is solved in particular by providing a drawer cabinet with a cabinet body configured to hold a plurality of drawers movable between a closed position and an open position, wherein the drawer cabinet has a locking mechanism configured to selectively lock the plurality of drawers as a whole in a locking position of the locking mechanism and to release them in an unlocking position of the locking mechanism, wherein the locking mechanism is configured to provide an individual drawer extension lock in the unlocking position, and wherein the drawer cabinet additionally has a release device configured to release at least one drawer of the plurality of drawers to be opened by bypassing the locking mechanism.The advantage of the drawer cabinet according to the invention is that, by actuating the release device, only one drawer can be unlocked at a time, bypassing the global locking mechanism. This allows only one drawer to be pulled out at a time. The other drawers remain locked by the locking mechanism. The global locking mechanism is retained so that it can be used in an emergency to release the drawers, while also providing a simple individual drawer extension lock. Furthermore, the local release mechanism allows for the simple implementation of access control.

[0006] The cabinet body is specifically designed to allow the majority of drawers in or on the cabinet body to be moved between the closed position and the open position.

[0007] In particular, the locking mechanism is a global locking mechanism – that is, a mechanism acting on all drawers – designed to lock all drawers of the plurality of drawers simultaneously in the locked position and release them in the unlocked position. In contrast, the unlocking device is a local device – that is, a device acting on a few drawers, in particular on a single drawer – by means of which, in particular, a single drawer can be released by bypassing the locking mechanism, while the remaining drawers of the plurality of drawers remain locked by the locking mechanism. In particular, the unlocking device acts selectively on one of the drawers; that is, it can be selected which drawer the unlocking device acts on, i.e., which drawer is to be unlocked by the unlocking device.

[0008] The fact that the release device is designed to free the at least one drawer to be opened by bypassing the locking mechanism means, in particular, that the release device is designed to release the at least one drawer to be opened while the locking mechanism is in its locked position. The locking mechanism is therefore not moved into its unlocked position; rather, it remains in its locked position while the at least one drawer to be opened is released by the release device.

[0009] The locking mechanism is specifically designed to selectively lock and release the majority of drawers in the closed position, in particular such that the drawers cannot be moved from the closed position to the open position in the locked position, and that at least one drawer can be moved from the closed position to the open position in the unlocked position.

[0010] Advantageously, the locking mechanism provides an emergency release, which allows the majority of drawers to be released if the release device is not functioning, for example due to a power failure or other, possibly mechanical, malfunction.

[0011] The fact that the locking mechanism is designed to provide single-drawer locking in the unlocked position means, in particular, that the locking mechanism implements single-drawer locking; that is, the locking mechanism allows at least one drawer to be pulled out while simultaneously re-locking the other drawers.

[0012] In one embodiment, the drawer cabinet is configured to hold precision tools, particularly for machining workpieces. Specifically, the drawer cabinet is designed as a dispensing system for such tools.

[0013] According to a further development of the invention, the locking mechanism has at least one locking rod that can be moved between the locking position and the unlocking position, which is arranged and configured to cooperate in the locking position with an undercut of a locking tongue of a drawer of the plurality of drawers - locking - and to release the locking tongue in the unlocking position.

[0014] In one embodiment, the locking rod is arranged and configured to rest against the undercut in the locking position, thus locking it in place.

[0015] Alternatively or additionally, the locking rod is designed as a locking rail, in particular as a locking plate. Alternatively or additionally, the locking rod is rotatable about a first axis of rotation between the locking position and the unlocking position, and in particular, can be moved between the locking position and the unlocking position by rotating it about the first axis of rotation.

[0016] Alternatively or additionally, the locking bar is arranged and configured to interact simultaneously with a plurality of undercuts of a plurality of locking tongues – in particular, one locking tongue per drawer, each with an undercut – and to release the plurality of locking tongues simultaneously in the unlocked position. In particular, the locking bar extends along a longitudinal direction, especially in a vertical direction, with the plurality of locking tongues arranged one behind the other, i.e., in particular one above the other, along the longitudinal direction of the bar, so that they can be selectively engaged by the locking bar in the locked position and released in the unlocked position.

[0017] In one embodiment, the locking bar is arranged on a rear inside side of the drawer cabinet, in particular centrally to at least one of the drawers and / or the cabinet body.

[0018] According to a further development of the invention, the unlocking device has a release mechanism designed to interact with a locking tongue of a drawer (or multiple drawers) that can be moved between a locking position and a release position, in order to move the movable locking tongue into the release position, in particular from the locking position to the release position. This advantageously represents a particularly simple and less error-prone design of the unlocking device.

[0019] In one embodiment, the locking mechanism has two locking rods which are synchronously coupled to each other in a V-shaped arrangement opening towards the drawers.A first locking rod of the two locking rods is arranged and configured to interact in the locked position with the at least one undercut of the at least one locking tongue when the locking tongue is in its locked position, and to release the locking tongue in the unlocked position. A second locking rod of the two locking rods is arranged and configured to interact with a locking ramp of the locking tongue. The locking ramp can rotate the second locking rod from its unlocked position to the open position when the drawer is pulled out from the closed position, such that, via the synchronously movable coupling, the first locking rod is simultaneously moved back into the locking position, so that the other drawers are relocked while the one drawer that has just been pulled out is opened.In particular, this method implements individual drawer locking. In one embodiment, an opening ramp is attached to the undercut of the locking tongue. When the drawer is moved back from the open position, this ramp interacts with the first locking bar in the closed position, forcing it back into the unlocked position, thus globally unlocking all drawers. Due to the synchronously moving coupling, the second locking bar is also simultaneously moved back into the unlocked position. A global key mechanism allows for the initial unlocking or final locking of all drawers, independent of any drawer movement, by moving the locking bars into the unlocked or locked position, particularly via a mechanical key or an electronic lock.Such a locking mechanism is disclosed in particular in WO 96 / 25577 A1 - see in particular Figures 5A to 5F and the accompanying description.

[0020] In its release position, the locking tongue can be guided, in particular, between the locking bars arranged in the locking position, without coming into contact with them, so that the drawer can be opened by bypassing the locking mechanism.

[0021] To prevent the locking tongue, which in one embodiment is pre-tensioned into the locking position, from moving the locking mechanism into the unlocked position when the drawer is closed (bypassing the locking mechanism via the unlocking device), and thus unintentionally unlocking all drawers, one embodiment incorporates a ramp such that the locking tongue is moved into its release position by means of the ramp during the closing process in the area of ​​the locking rod. Alternatively, in another embodiment, the locking rod is pre-tensioned into the locked position – in particular by means of a tension or compression spring, for example, a coil spring.To enable the global unlocking of all drawers, for example in the event of an emergency release, the locking rod can be relieved of its preload by means of the global key mechanism, in particular by relocating or relaxing the tension or compression spring. Specifically, the first locking rod can be preloaded into the locked position, or both locking rods can be preloaded into the locked position. The preloading of the locking rods can be implemented, for example, by preloading the synchronously movable coupling of the locking rods in the direction of the locked position. Alternatively, it is of course also possible to directly preload at least one locking rod, in particular the first locking rod.

[0022] In one embodiment, the drawer cabinet—particularly when the multiple drawers are arranged in multiple columns—has several locking bars or multiple pairs of two locking bars each, especially one pair of first and second locking bars for each column of drawers. It is possible that the different pairs of locking bars are also synchronously coupled to one another for movement.

[0023] According to a further development of the invention, the release mechanism comprises an eccentric rotatable about a second axis of rotation, which is arranged and configured to interact with the locking tongue, which can be moved between the locking position and the release position, in order to move the locking tongue into the release position. Advantageously, this represents a particularly simple, cost-effective, and less error-prone design of the release mechanism.

[0024] In one embodiment, the eccentric is rotatable about the second axis of rotation by means of an electric motor, also referred to as the first electric motor, which is particularly controllable. In one embodiment, the eccentric can be rotated directly by the electric motor; in another embodiment, the eccentric is mechanically connected to the electric motor via a drive shaft, particularly a vertical one. In particular, in one embodiment, the eccentric can be displaced along the drive shaft—especially in the vertical direction—and rotated in various positions along the drive shaft by the electric motor, particularly to selectively interact with different locking tongues of different drawers. This represents a particularly simple embodiment, since only the eccentric needs to be displaced along the drive shaft.Alternatively, it is also possible to relocate the electric motor together with the eccentric, especially to optionally work with different locking tongues of different drawers.

[0025] In one embodiment, the eccentric is arranged and configured to indirectly interact with the locking tongue, which can be moved between the locking position and the release position, in order to move the locking tongue into the release position. For example, the eccentric can interact with a displacement piston, a displacement bolt, or the like, which in turn interacts with the locking tongue.

[0026] In another embodiment, the eccentric is arranged and configured to interact directly with the locking tongue, which can be moved between the locking position and the release position, in order to move the locking tongue into the release position.

[0027] In one embodiment, the ramp, which is provided to prevent the locking tongue, pre-tensioned to the locking position, from moving the locking mechanism into the unlocked position when the drawer is closed (bypassing the locking mechanism via the release device), and thus unintentionally unlocking all drawers, is arranged on the movable locking tongue and forms a contact surface for the eccentric. Alternatively or additionally, the ramp is arranged on the eccentric and forms a contact surface there for the locking tongue. In particular, in each of these embodiments, when the drawer released by the release mechanism is opened, the eccentric is held in its position corresponding to the release position of the locking tongue until the drawer is closed again. Only then is the eccentric moved back to its position corresponding to the locking position of the locking tongue.In this way, the ramp and the eccentric ensure that the locking tongue reaches its release position in the area of ​​the locking bar when the drawer closes, thus preventing an unwanted global unlocking of all drawers. Of course, it is also possible for the eccentric to briefly move into its locking position while the drawer is opening, but then return to its release position in time before or during the closing of the drawer.

[0028] According to a further development of the invention, the drawer cabinet has a displacement mechanism configured to selectively relocate the release mechanism, in particular the eccentric, or the eccentric with its associated electric motor, between at least two drawers of a plurality of drawers. Advantageously, this makes it very simple and cost-effective, particularly with a minimal number of parts, to selectively release a single drawer of a plurality of drawers by using the same release mechanism for several drawers. In a particularly advantageous embodiment, only one release mechanism is provided for all drawers or for a column of drawers, and the release mechanism can be relocated to the drawer to be opened.Alternatively, in a more complex design, it is also possible to assign such a release mechanism to each drawer, whereby the release mechanisms can then be controlled independently of each other.

[0029] In particular, the unlocking device features the displacement mechanism.

[0030] In one embodiment, the displacement mechanism includes a guide rail – particularly in addition to the drive shaft – along which the release mechanism can be displaced. Alternatively or additionally, the displacement mechanism includes a drive belt for displacing the release mechanism. Alternatively or additionally, the displacement mechanism includes a drive motor, particularly a second electric motor, to effect the displacement of the release mechanism. In particular, the drive motor acts on the drive belt, which in turn is coupled to the release mechanism for its displacement.

[0031] According to a further development of the invention, the drawer cabinet has a control device that is operatively connected to the displacement mechanism and configured to control the displacement mechanism to move a specific drawer from among a plurality of drawers. In particular, this allows a single drawer from among the plurality of drawers to be advantageously selected and selectively released by the release mechanism.

[0032] In one embodiment, the control device has an interface configured for selecting a specific drawer, particularly by a user. Advantageously, this allows for access control, enabling certain users to open only specific drawers. Specifically, access to individual drawers can be granted or denied to different users by an administrator.

[0033] The interface may, in particular, include a display and / or allow input via keyboard, mouse or touchscreen.

[0034] In one embodiment, the interface is additionally or alternatively configured to allow remote access – wireless or wired – in particular via the internet, especially Ethernet, or via Bluetooth, WLAN, an infrared connection, or in any other suitable manner. Furthermore, app control of the interface using a mobile device, such as a smartphone or tablet, is also possible.

[0035] In one embodiment, the drawer cabinet has a display device configured to indicate, for example, visually, audibly, or haptically, particularly by means of a light signal, which drawer is unlocked or released, i.e., which drawer can be opened. Specifically, each drawer can be assigned at least one light-emitting diode (LED), with the control device being operatively connected to the LEDs and configured to activate the LED assigned to the drawer currently being opened, so that this LED illuminates while the other LEDs, assigned to drawers not being opened, remain off. A traffic light system is also possible, in which, for example, LEDs of locked drawers illuminate red, while LEDs of released drawers illuminate green.Advantageously, the user is guided to the drawer to be opened in a simple and intuitive way by an easily understandable light signal.

[0036] According to a further development of the invention, the drawer cabinet additionally features an ejection mechanism designed to open at least one drawer of a plurality of drawers, at least over a predetermined opening path. This advantageously simplifies the opening process for the user, particularly when the drawers are filled with heavy objects such as tools. The ejection mechanism can, in particular, include an ejection pivot arm that—optionally actuated by an electric motor or spring-loaded—can be rotated about a third axis of rotation to push the drawer to be opened, at least over the predetermined opening path.

[0037] In one embodiment, the relocation mechanism also incorporates the ejection mechanism. This can then advantageously be relocated, together with the release mechanism, to a specific drawer. It is also possible for the release mechanism to incorporate the ejection mechanism.

[0038] In one embodiment, the drawer cabinet has an opening limitation mechanism designed to allow a drawer to be pulled out only to a predetermined maximum extension length. Depending on the contents to be removed and their storage location, it is advantageous to specify a particular maximum extension length for a specific drawer for a given user, particularly to prevent the user from accidentally or intentionally removing other contents. Such an opening limitation mechanism is disclosed, for example, in DE 10 2015 205 018 B3.

[0039] According to a further development of the invention, the cabinet body is configured to hold the majority of drawers side by side in columns. Alternatively or additionally, the cabinet body is configured to hold the majority of drawers one below the other in rows.

[0040] According to a further development of the invention, the drawer cabinet has at least one drawer according to the invention as described below, or a drawer according to one or more of the embodiments described below.

[0041] The problem is also solved by creating a drawer that is designed for use in a drawer cabinet according to the invention or a drawer cabinet according to one or more of the embodiments described above, wherein the drawer has a locking tongue that can be moved between a locking position and a release position. In connection with the drawer, those advantages are realized in particular that were previously explained in connection with the drawer cabinet.

[0042] In one embodiment, the locking tongue is arranged on a rear outer side of the drawer, particularly in the center of the drawer. Specifically, the locking tongue is arranged on a locking plate rigidly connected to a drawer body.

[0043] According to a further development of the invention, the locking tongue is pre-tensioned into the locking position. Advantageously, the drawer is thus locked in the drawer cabinet as intended, as long as, firstly, the locking mechanism is in its locked position and, secondly, the locking tongue is not actively moved into the release position. In this way, accidental opening of the drawer is effectively prevented.

[0044] In one embodiment, the locking tongue is pre-tensioned into the locked position by means of a pre-tensioning element. The pre-tensioning element can be designed, in particular, as a spring, especially a coil spring or leaf spring.

[0045] According to a further development of the invention, the locking tongue has an undercut and is configured to engage the locking bar in its locked position with the undercut in the locked position, and to be disengaged from the locking bar in the released position. In particular, the locking tongue, especially the undercut, is adapted to the drawer cabinet, especially to the at least one locking bar, such that the locking tongue engages the locking bar in its locked position with the undercut in its locked position, and is disengaged from the locking bar in its released position.In particular, the locking tongue is positioned away from or offset from the locking bar in the release position, meaning that it does not engage behind the locking bar with the undercut, even while the locking bar remains in its locked position.

[0046] In one embodiment, the closing tongue has the safety ramp described above and, following the undercut, the opening ramp, as disclosed in WO 96 / 25577 A1 - see in particular Figures 5A to 5F and the accompanying description.

[0047] The invention will be explained in more detail below with reference to the drawing. The drawing shows: Figure 1 shows a first embodiment of a drawer cabinet with a first embodiment of a drawer and a locking mechanism; Figure 2 shows a first detailed view of the drawer cabinet according to Figure 1, showing a release mechanism and a locking tongue of the drawer; Figure 3 a second detailed view of the drawer cabinet according to Figure 1 Figure 4 shows a third detailed view of the drawer cabinet according to Figure 1 with the locking mechanism in a locked position, the release mechanism and the locking tongue in a blocked position; Figure 5 a fourth detailed view of the drawer cabinet according to Figure 1 with the locking mechanism in the locked position, the release mechanism and the locking tongue in a release position, and Figure 6 a detailed representation of a second embodiment of a drawer cabinet with a second embodiment of a drawer.

[0048] Fig. 1 Figure 1 shows a first embodiment of a drawer cabinet 1 with a first embodiment of a drawer 3 and a locking mechanism 5.

[0049] The drawer cabinet has a cabinet body 7, which is configured to hold a plurality of drawers 3, of which only one drawer 3 is shown here as an example, movable between a closed position and an open position, in particular in or on the drawer cabinet 1, especially in the cabinet body 7. The drawer 3 shown here is in the closed position and can be pulled out into the open position, in particular in an unlocked position of the locking mechanism 5, towards the viewer. The locking mechanism 5 is configured to selectively lock the plurality of drawers 3 in a locked position of the locking mechanism 5 and release them in the unlocked position.Furthermore, the locking mechanism 5 is designed to provide an individual extension lock in the unlocked position, so that all other drawers 3 are locked in their respective closed positions by the locking mechanism 5 when one of the drawers 3 is pulled out towards its open position.

[0050] Additionally, the drawer cabinet 1 has a release device 9 which is designed to release at least one drawer 3 to be opened by bypassing the locking mechanism 5, so that the drawer 3 to be opened can be opened while the locking mechanism 5 is in its locked position.

[0051] The locking mechanism 5 has at least one locking rod 11, in the embodiment shown here a first locking rod 11.1 and one in the Figures 4 and 5The second locking bar 11.2 is shown. The locking bars 11 are arranged on a rear inner side of the drawer cabinet 1, in particular centrally to the drawer 3 and the cabinet body 7.

[0052] The cabinet body 7 is configured to hold the majority of drawers 3 in rows, one below the other. In another embodiment, it is additionally or alternatively possible for the cabinet body 7 to be configured to hold the majority of drawers 3 side by side in columns.

[0053] Fig. 2 shows a first detailed view of drawer cabinet 1 according to Figure 1 , wherein a release mechanism 13 of the unlocking device 9 and a locking tongue 15 of the drawer 3 are shown.

[0054] Identical and functionally equivalent elements are provided with the same reference symbols in all figures, so that reference is made to the preceding description in each case.

[0055] The locking tongue 15 is arranged on a rear outer surface of the drawer 3, in particular centrally to the drawer 3. Preferably, the locking tongue 15 is arranged on a locking plate 19 that is rigidly connected to a drawer body 17 of the drawer 3.

[0056] The release mechanism 13 is designed to interact with the movable locking tongue 15 between a locking position and a release position in order to move the movable locking tongue 15 from the locking position to the release position.

[0057] For this purpose, the release mechanism 13 has an eccentric 21 rotatable about a rotation axis - referred to as a second axis of rotation - which is arranged and set up to interact with the locking tongue 15 which can be moved between the locking position and the release position in order to move the locking tongue 15 into the release position.

[0058] In particular, the eccentric 21 is mediated via a drive shaft 23 by a Figure 1 and 3 The first electric motor 25, shown in the illustration - in particular controllable - is rotatable about the second axis of rotation.

[0059] The eccentric 21 can also be moved along the drive shaft 23 - especially in the vertical direction - in order to optionally interact with different locking tongues 15 of different drawers 3.

[0060] The drawer cabinet 1 also has a displacement mechanism 27, which is configured to selectively displace the release mechanism 13, in particular the eccentric 21, between at least two drawers 3 or the plurality of drawers 3. The displacement mechanism 27 has, in particular, a guide rail 29 and a drive belt 31 for displacing the release mechanism 13, and also a [missing element] in the Figure 1 and 3The second electric motor 33 shown acts as a drive motor to effect the displacement of the release mechanism 13. The second electric motor 33 acts on the drive belt 31, which in turn is coupled to the release mechanism 13 to displace it.

[0061] Fig. 3 shows a second detailed view of drawer cabinet 1 according to Figure 1 .

[0062] This shows Figure 3in particular the displacement mechanism 27 with the first electric motor 25, the guide rail 29, the drive belt 31 and the second electric motor 33. By means of the displacement mechanism 27, the release mechanism 13 and in particular the eccentric 21 can be displaced along the guide rail 29 - in particular with reference to the drawer cabinet 1 in the vertical direction, i.e. in the geodetic vertical direction - wherein the eccentric 21 can optionally be engaged with one of the drawers 3 in order to move the displaceable locking tongue 15 of the selected drawer 3 individually into the release position and thus to unlock the selected drawer 3 individually bypassing the locking mechanism 5.

[0063] The drawer cabinet 1 also includes a control device 35, which is operatively connected to the displacement mechanism 27 and configured to actuate the displacement mechanism 27 to move to a specific drawer 3 of the plurality of drawers 3. Furthermore, the control device 35 is operatively connected to the release mechanism 13 to release the selected drawer 3. In particular, the control device 35 is operatively connected to the first electric motor 25 and the second electric motor 33 to actuate them. The control device 35 can, for example, be configured as a conventional personal computer or in some other way.

[0064] The control device 35 can have an interface 37 configured for user selection of a specific drawer 3. The interface can, in particular, include a display and / or allow input via keyboard, mouse, or touchscreen. The interface 37 can also be configured to permit remote access—wireless or wired—in particular via the internet, especially Ethernet, or via Bluetooth, WLAN, an infrared connection, or in any other suitable manner. Furthermore, app control of the interface 37 using a mobile input device, such as a smartphone or tablet, is also possible.

[0065] The drawer cabinet 1 can additionally have an ejection mechanism configured to open at least one drawer 3 of the plurality of drawers 3 at least via a predetermined opening path. Preferably, the displacement mechanism 27 can simultaneously include the ejection mechanism. In particular, the release mechanism 13 can include the ejection mechanism.

[0066] Alternatively or additionally, the drawer cabinet 1 has an opening limiting mechanism which is set up to allow the extension of a drawer only up to a predetermined extension path, as disclosed, for example, in DE 10 2015 205 018 B3.

[0067] Fig. 4 shows a third detailed view of drawer cabinet 1 according to Figure 1 with the locking mechanism 5 in a locking position, the release mechanism 13 and the locking tongue 15 in a locking position.

[0068] The locking mechanism 5 has, in addition to the first locking rod 11.1 which can be moved between the locking position and the unlocking position, a second locking rod 11.2 which is synchronously coupled to the first locking rod 11.1.

[0069] The locking rods 11, designed in particular as locking rails or locking plates, are each rotatably mounted about an axis of rotation between the locked and unlocked positions. In particular, the axis of rotation about which the first locking rod 11.1 is rotatable is referred to as the first axis of rotation. Furthermore, the locking rods 11 are arranged in a V-shaped configuration opening towards the drawer 3.

[0070] The first locking bar 11.1 is arranged and configured to engage in a locking manner with an undercut 39 of the locking tongue 15 of the drawer 3 in the locked position and to release the locking tongue 15 in the unlocked position. In particular, in the locking position shown here, the first locking bar 11.1 rests against the undercut 39 in a locking manner or at least engages behind it in a locking manner, so that the drawer 3 can be pulled out from the closed position shown to the open position – as shown in the illustration of Figure 4upwards - is not possible. The second locking bar 11.2 is arranged and configured to interact with a locking ramp 41 of the locking tongue 15, whereby the locking ramp 41 can rotate the second locking bar 11.2 out of its unlocked position to achieve single-extension locking when the drawer 3 is pulled out from the closed position to the open position, such that, via the synchronously movable coupling, the first locking bar 11.1 is simultaneously moved back into the locked position, so that the other drawers 3 are relocked while the drawer 3 that was just pulled out is opened. A chamfer 45, acting as an opening ramp 43, adjoins the undercut 39, which, when the drawer 3 is moved back from the open position, engages the first locking bar 11.1 in the closed position.1 interact and can force them back into the unlocked position, so that all drawers 3 are globally unlocked. Due to the synchronously moving coupling of the locking rods 11, the second locking rod 11.2 is then also simultaneously moved back into its unlocked position.

[0071] Preferably, each drawer 3 of the drawer cabinet 1 has a locking tongue 15, which is particularly movable. The first locking bar 11.1 is arranged and configured to simultaneously engage the plurality of undercuts 39 of the plurality of locking tongues 15 in the locked position and to simultaneously release the plurality of locking tongues 15 in the unlocked position. The locking bars 11 each extend along a longitudinal direction, particularly in the vertical or geodetic direction of the drawer cabinet 1, with the plurality of locking tongues 15 arranged one behind the other along the longitudinal direction of the bars, i.e., particularly geodesically one above the other.

[0072] In Figure 4It is further shown that the locking tongue 15 is pre-tensioned into its locking position by means of a pre-tensioning element 47. In the embodiment shown here, the pre-tensioning element 47 is designed as a helical spring.

[0073] By means of the displacement mechanism 27, the eccentric 21 can be positioned at the level of the locking tongue 15. Figure 4 The eccentric 21 does not yet interact with the locking tongue 15, and the latter is in its locking position.

[0074] Fig. 5 shows a fourth detailed view of the drawer unit according to Figure 1 with the locking mechanism 5 in the locking position, the release mechanism 13 and the locking tongue 15 in a release position.

[0075] In the representation according to Figure 5The eccentric 21 is rotated by means of the drive shaft 23 such that it engages with the locking tongue 15 and, against the preload of the preload element 47, forces the tongue from its locked position into its release position. As a result, the locking tongue 15 is no longer engaged with the locking rods 11, and the drawer 3 is released or unlocked, bypassing the locking mechanism 5 (i.e., in the locked position of the locking mechanism 5), and can be pulled out from its closed position to the open position. The locking tongue 15 can be moved in its release position between the locking rods 11, which are each in the locked position – preferably without touching them – in order to open the drawer 3.

[0076] If the locking tongue 15 disengages from the eccentric 21, it is forced back into its locking position by the preload element 47, so that the drawer 3 is locked again after being moved back into the closed position. The eccentric 21, meanwhile, is in the position it was in – particularly while the drawer 3 is open. Figure 4 The displayed position was rotated back.

[0077] Fig. 6 shows a second embodiment of the drawer cabinet 1 with a second embodiment of a drawer 3.

[0078] To prevent the first locking bar 11.1 from being forced into the unlocked position by the locking tongue 15 (which is pre-tensioned to its locking position) when the drawer 3, released by the release mechanism 13 and bypassing the locking mechanism 5, is moved back from the open position to the closed position, thus unintentionally unlocking all drawers 3 globally, a ramp 49 is arranged and configured in this embodiment such that the locking tongue 15 is moved into its release position by means of the ramp 49 during the closing process in the area of ​​the first locking bar 11.1. The ramp 49 is arranged on the locking tongue 15 and forms a contact surface for the eccentric 21.

[0079] In another embodiment, not shown, the approach ramp 49 can alternatively or additionally be arranged on the eccentric 21, where it forms a contact surface for the closing tongue 15.

[0080] In particular, the eccentric 21 is preferably held in its position corresponding to the release position of the locking tongue 15 when the drawer 3, released by the release mechanism 13, is opened, until the drawer 3 is closed again. Only then is the eccentric 21 moved back to its position corresponding to the locking position of the locking tongue 15, which then also returns the locking tongue 15 to its locking position.

[0081] Alternatively, in another embodiment, the first locking rod 11.1 can be pre-tensioned into the locking position, in particular by means of a tension or compression spring. To then be able to globally unlock all drawers 3, for example in an emergency release, the first locking rod 11.1 can be relieved of the pre-tension by means of a global key mechanism, in particular by displacing or relaxing the tension or compression spring.

Claims

1. A drawer cabinet (1) having a cabinet body (7) adapted to displaceably hold a plurality of drawers (3) between a closed position and an open position, wherein the drawer cabinet (1) has a locking mechanism (5) adapted to selectively lock the plurality of drawers (3) in total in a locking position of the locking mechanism (5) and release them in an unlocking position of the locking mechanism (5), wherein the locking mechanism (5) is adapted to provide a single drawer pull-out safety mechanism in the unlocking position, characterised in that the drawer cabinet (1) additionally has an unlocking device (9) adapted to release at least one openable drawer (3) of the plurality of drawers (3) by bypassing the locking mechanism (5).

2. The drawer cabinet (1) of claim 1, wherein the locking mechanism (5) has at least one locking rod (11) displaceable between the locking position and the unlocking position, which is arranged and adapted to interact with an undercut (39) of a closing tongue (15) of a drawer (3) of the plurality of drawers (3) in the locking position and to release the closing tongue (15) in the unlocking position.

3. The drawer cabinet (1) of one of the preceding claims, wherein the unlocking device (9) has a release mechanism (13) which is adapted to interact with a closing tongue (15) of a drawer (3) of the plurality of drawers (3) displaceable between a blocking position and a release position to displace the displaceable closing tongue (15) into the release position.

4. The drawer cabinet (1) of claim 3, wherein the release mechanism (13) has an eccentric (21) rotatable about an axis of rotation, which is arranged and adapted to interact - in particular indirectly or directly - with the closing tongue (15) displaceable between the blocking position and the release position to displace the closing tongue (15) into the release position.

5. The drawer cabinet (1) of one of claims 3 or 4, wherein the drawer cabinet (1) has a displacement mechanism (27) adapted to selectively displace the release mechanism (13) between at least two drawers (3) of the plurality of drawers (3).

6. The drawer cabinet (1) of claim 5, having a control device (35) which is operatively connected to the displacement mechanism (27) and is adapted to actuate the displacement mechanism (27) for displacement to a specific drawer (3) of the plurality of drawers (3), wherein the control device (35) in particular has an interface (37) which is adapted to select the specific drawer (3).

7. The drawer cabinet (1) of one of the preceding claims, wherein the drawer cabinet (1) additionally has an ejection mechanism which is adapted to open at least one drawer (3) of the plurality of drawers (3) at least over a predetermined opening path, wherein in particular the displacement mechanism (27) has the ejection mechanism.

8. The drawer cabinet (1) of one of the preceding claims, wherein the cabinet body (7) is adapted to hold the plurality of drawers (3) - column-wise next to each other, and / or - row-wise below each other.

9. The drawer cabinet (1) of one of the preceding claims, wherein the drawer cabinet (1) has at least one drawer (3) of one of claims 10 to 12.

10. A drawer (3) adapted for use in a drawer cabinet (1) of one of claims 1 to 9, wherein the drawer (3) has a closing tongue (15) displaceable between a blocking position and a release position.

11. The drawer (3) of claim 10, wherein the closing tongue (15) is pretensioned into the blocking position.

12. The drawer (3) of one of claims 10 or 11, wherein the closing tongue (15) has an undercut (39) and is adapted to engage behind the locking rod (11) in its locking position with the undercut (39) in the blocking position, and to be arranged out of engagement with the locking rod (11) in the release position.

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