FR2625424A1 - - Google Patents

Abstract

Theft-proof furniture for precious objects, especially a fireproof safe, comprising a frame (12) and a drawer (2) mounted on this frame (12) by guide means (13), characterised in that it possesses non- motorised means for returning the drawer (2) from any open position towards a closed/unlocked position, in which the interior (15) of the drawer (2) is completely shut off and from which the drawer (2) can be pulled manually into the open position; motorised means for active locking/unlocking between the closed/unlocked position and a closed/locked position, which return the drawer (2) automatically to the closed/locked position; unlocking control means (17) which, when actuated in the closed/locked position, trigger the unlocking of the drawer (2) and its putting into the closed/unlocked position by the motorised locking/unlocking means.

Description

SECURITY FURNITURE WITH DRAWER PERMANENTLY RECEIVED IN POSITION

CLOSED / LOCKED.

  The invention relates to safety furniture with a drawer capable of containing precious objects to be protected against external aggressions such as: fire, gas, theft ... but in front

be used regularly.

  We already know (for example: French patent application 2196

  193 and French patent 1,154,183), various motorized devices

  tion of the opening and closing maneuvers of the drawers.

  Such devices, when they are of the self-closing type

  that, oblige the user to press permanently on a pedal or a control switch. In addition, the motor being active over the entire travel movement of the drawer, the use of the device involves a significant consumption of electricity, and it may be that the device is left in the open position.

  if the accumulators supplying the engine become discharged

  aged. In addition, such devices do not meet safety standards since the motor is active at the precise moment of closing the drawer, while this closing can be hindered

  by misplaced objects, or even by members of the user.

  In particular, such devices are particularly dangerous.

  for the user if automatic closing occurs

  while the latter manipulates the objects inside the drawer.

  Furthermore, the known devices are very complex and put--

  many mechanical and electrical parts are involved. Therefore, when one of the mechanical or electrical elements of the

  device has failed, the drawer becomes unused

  ble, and especially is not necessarily in the closed safety position.

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  In addition, repair of the defective item may require

  ter the opening of the drawer. Therefore, in case of failure of one of these elements, during the entire repair or maintenance, the objects contained in the drawer are not

not protected.

  Also known, for example from French patent application 2,580,324, is an automatic closing and locking mechanism for a fire safety cabinet. In such mechanisms, the cabinet doors are recalled to the closed / locked position

  by means of recall in the event that fire breaks out.

  Fire detection is carried out using rods made of hot-melt material which normally hold the doors in the open position. Such known mechanisms are extremely sophisticated and do not offer sufficient security in practice. Indeed,

  fire may destroy objects in the mobile

  bind, without the meltable rods having melted. It is also possible, moreover, that the fusible links will melt when no fire has really started. Finally, such mechanisms are ineffective for security furniture for protecting objects against gas or theft.

  The invention aims to remedy the aforementioned drawbacks of mobile

  safety ties, and aims to provide such drawer furniture for which the drawer must be in the closed / locked position unless the user actually uses it

  and keeps it in the open position.

  The invention simultaneously aims to provide such a mobi-

  link that is completely safe to use, and in particular that cannot damage objects or injure the user

  during the automatic closing operation.

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  Another object of the invention is to provide such furniture which protects the objects it contains from fire or attack

liquid or gaseous chemicals.

  More particularly, the invention aims to propose a fireproof chest with a drawer in which the drawer systematically returns

  in the closed / locked position in which it effectively protects-

the objects it contains.

  To do this, the invention relates to safety furniture for

  precious objects, comprising a frame, and a slide-out drawer

  sant on this chassis thanks to guide means, characterized in that it comprises non-motorized means for returning the drawer from any open position in which the interior of the drawer is accessible, towards a closed / unlocked position in which the interior of the drawer is completely obscured and from which the drawer can be pulled manually in the open position against the return means, these return means being active between these two positions to recall

  the drawer as soon as it is released; motorized locking means

  lage / unlocking active between the closed / unlocked position and a closed / locked position from which the drawer can no longer be opened manually, these motorized means of locking 1 lage / unlocked 1 lage automatically recalling the drawer

  in closed / locked position; means for controlling the release

  rusting which, when actuated in the closed / locked position, triggers the unlocking of the drawer and its setting in the closed / unlocked position by the motorized locking / unlocking means. The furniture according to the invention includes a time delay, and the motorized locking / unlocking means recall the drawer in the closed / locked position from the position

  closed / unlocked, after expiry of the time To

tion.

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  The furniture according to the invention comprises an electrical box

  rigidly but removably associated with the chassis and which

  holds all the electrical devices necessary for the function

  of the furniture, in particular the motorized means of locking

  lage / unlocking, and the unlocking control means.

  This electrical box can only be removed from the chassis, for example for repair or maintenance, when the drawer

  is in the closed / locked position.

  Other advantages and characteristics of the invention will appear

  on reading the following description referring to the figures

  appended representing a preferred embodiment of the invention, and in which: - Figure 1 is a schematic perspective view of a

  furniture according to the invention in closed / locked position.

  - Figure 2 is a schematic perspective view of a

  furniture according to the invention in the closed / unlocked position.

  - Figure 3 is a schematic perspective view of a

  furniture according to the invention in the open position.

  - Figure 4 is a schematic side view of an electrical box of the furniture according to the invention, the connections and the

  electrical wires not being shown for clarity.

  - Figure 5 is a schematic rear view, without

  the vertical rear wall, of furniture according to the invention.

  - Figure 6 is a schematic front view, without the

  drawer or electrical box, of furniture according to the invention.

  - Figures 7a and 7b are schematic views in partial section along a vertical plane parallel to the side walls

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  furniture according to the invention, illustrating the operation of

  means of locking the lage / unlocking 1 lage.

  -Figure 8 represents an electrical diagram of the furniture

according to the invention.

  The preferred embodiment shown in the figures

  of furniture 1 according to the invention is a parallelepiped flame retardant

  dique comprising a drawer 2 sliding perpendicular to one of the faces of the furniture 1 conventionally called face

before 3.

  The trunk I has five other faces also conventionally called rear faces 4, left side 5, side

  right 6, from above 7, from below 8.

  The drawer 2 has a front wall 9 provided with a handle 10

  and at least one container element 11 extending towards the rear

  from the front vertical wall 9 of drawer 2.

  The trunk 1 forms a frame 12 for the drawer 2 which is slidably mounted

  health on this chassis 12 by means of guide 13 which are

  for example made up of slides, rollers, etc.

  The aforementioned elements of furniture 1 according to the invention are widely known to those skilled in the art in themselves, and can be the subject of many obvious variants. For example, the furniture can consist of a desk, or a cabinet, the drawer 2 can be of the horizontal, vertical or inclined type,

  can slide horizontally, vertically, or in a direction

  inclined tion, can be of the single or double extension type, Furthermore, the trunk 1 as shown can also be an integral part of more general furniture, for example being inserted in a fire-resistant cabinet, or even being inserted

  rigidly and immovablely in the walls of a building.

  Safety furniture 1 for precious objects, according to the invention,

  comprising a frame 12, a drawer 2 mounted sliding horizontally-

  ment on this frame 12 thanks to the guide means 13, is characterized

  laughed at in that it comprises: - non-motorized means 14 for returning the drawer 2 from any open position in which the interior 15 of the drawer 2 is accessible, towards a closed / unlocked position in which the interior 15 of the drawer 2 is completely concealed and from which the drawer 2 can be pulled manually in the open position against the return means 14, these return means 14 being active to return the drawer 2 to the closed / unlocked position as soon as '' it is released from any open position, - motorized locking / unlocking means 16 active between the closed / unlocked position and a closed / locked position from which the drawer 2 can no longer be opened manually, these means 16 motorized locking / unlocking automatically recalling the drawer 2 in the closed / locked position, - means 17 for controlling the unlocking mistletoe, when they are actuated in the closed / locked position of the drawer 2, trigger the unlocking of the drawer 2 and its setting into the closed / unlocked position by the motorized locking means 16 /

unlocked 1 track.

  The frame 12 defines a frame 18 for the front wall 9 of the drawer 2. In the closed / locked position (FIG. 1), the front wall 9 is completely embedded in the frame 18, and the vertical outer front face 19 of the wall 9 of the drawer 2 is flush with the front face 3 of the furniture 1; the songs

  peripherals 20 of this wall 9 being invisible.

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  In this closed / locked position, the objects contained inside 15 of the furniture 1 are perfectly protected against external aggressions. For example, in the case of a fire-resistant safe 1, the protective seals ensuring total airtightness

  of drawer 2 are compressed and active.

  The vertical front wall 9 of the drawer 2 is thick and has peripheral edges 20 planes preferably extending over

  the entire thickness of this wall 9. The wall 9 can be made up of

  killed by several layers of different materials depending

  applications of the invention. However, the peripheral songs

  that 20 of this wall 9 have no rim or shoulder capable of overlapping the front face 3 of the furniture

  1. The wall 9 may include, if necessary, an internal rebate.

  However, in the preferred embodiment shown,

  the wall 9 does not have an internal rebate, but instead has

  re the shape of a rectangular parallelepiped, and the peripheral edges

  riques 20 extend over its entire thickness. The chassis 12 comprises

  te an internal rebate 21 against which the wall 9 is pressed in the closed / locked position. Possible seals are inserted

  between this rebate 21 and the wall 9 of the drawer 2.

  In the closed / unlocked position (Figure 2), the front wall 9

  drawer 2 protrudes from the front 3 of the furniture 1 while concealing

  both inside 15 of drawer 2 and leaving only visible the front face 19 and a flat part of the peripheral edges of this wall 9. Thus, no jamming of objects or members between the frame 18 and the wall 9 of the drawer 2 is not possible

  in or from this closed / unlocked position.

  By cons, the fact that the wall 9 of the drawer 2 protrudes outside relative to the front face 3 of the furniture 1, allows the user to know at a glance that the drawer 2 is in the closed / unlocked position .

  An open position of the drawer 2 is shown in FIG. 3.

  In this open position, the interior 15 is accessible. However

  Dant, the motorized means 16 for locking / unlocking are inactive. Thus, the user can use and handle the drawer 2 and the objects which it contains in complete safety, and without risk of seeing this drawer 2 closing suddenly or

untimely.

  On the contrary, the non-motorized means 14 for returning the drawer are active, so that this drawer 2 is returned to the closed / unlocked position (FIG. 2) as soon as the user releases the drawer 2. The non-motorized return means 14 are means against which it is easy to act by pulling the drawer 2. In addition, these means 14 are designed so that stopping the drawer in any open position is possible at will. Thus, if an object or a member of the user is trapped between the frame 12 and the drawer 2, this drawer 2 will remain in the open position. This is the only accidental case in which

  drawer 2 does not return to the closed / locked position.

  However, such a scenario is infinitely unlikely, insofar as the element 11 forming the drawer container can be shaped so as to prevent any protrusion of the objects which it contains outside the interior 15 which it delimits . The non-motorized return means 14 are gentle enough to avoid any injury to the user in the event that his fingers accidentally become trapped between the wall 9 of the drawer 2

and framing 18.

  For example, the return means 14 comprise an elastic member

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  that 14 of very long traction which extends when opening

drawer 2.

  FIG. 5 represents a possible embodiment of these

  non-motorized recall means 14. The elastic member 14 of trac-

  tion consists of a very long tension spring 14, one end 22 of which is secured to the chassis 12, while the other end 23 is rigidly associated with a rope 24 which is connected at its other end to the rear of the element 11, forming a container for the drawer 2. The spring 14 is associated with a rear vertical wall 25 pierced with a hole 26 through which the cord 24 passes. Rollers 27 hold the spring 14 against

  the wall 25, while allowing its extension.

  The return means 14 may however consist, alternatively, either of a simple inclination of the means 13 for guiding downwards and rearwards of the furniture 1, or of a weight lifted when the drawer 2 is opened , this weight being appropriately connected by pulleys and by a rope at the rear of the drawer 2. Other variants are still possible (cylinder

pneumatic, hydraulic, ...).

  The motorized locking / unlocking means 16 are preferably electric and comprise a direct current electric motor 28, accumulators 29 supplying electrical energy to the motor 28, a charger / rectifier device 30 making it possible to recharge the accumulator elements 29 and /or

  to power the electric motor 28 from the mains by the

  via an external socket 31, limit switches 33, 34, position 35 of the drawer 2, a gear train

  36 of transmission cooperating with the motor shaft 28 and compress

  nant an output shaft 37, and a polarity reversing relay 38.

  According to the invention, the furniture 1 comprises a timing device

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  station 39 active on the motorized locking / unlocking means 16

  rusting so that, after the expiration of the time To

  tion, the motorized locking / unlocking means 16 remind the drawer 2 in the closed / locked position from the closed / unlocked position. So if drawer 2 passes

  in the closed / unlocked position and if the time To

  sation has expired, drawer 2 will be automatically recalled when

  closed / locked position by motorized means 16 of ver-

  rusting / unlocking. Preferably, the timing device

  station 39 is triggered by actuation on the means 17 of

  unlocking control. In this case, the time To of the time-

  sation is of course greater than the time required for the installation of the drawer 2 in the closed / unlocked position by

  the locking / unlocking means 16. Thanks to this tempo-

  If the drawer 2 remains in the closed / unlocked position without being opened, it will automatically be returned to the closed / locked position. On the contrary, if the drawer 2 is placed in the open position by the user, the locking / unlocking means 16 become inactive, but the time delay continues to elapse. Thus, when the user releases the drawer 2, the latter going back to the closed / unlocked position, the time delay To will generally be over, and the drawer will be placed in the closed / locked position by the means

  16 motorized locking / unlocking.

  Preferably, the timing device 39 is included in the polarity reversing relay 38 which is timing. The time delay To is advantageously between 28 and 155,

especially of the order of 8 seconds.

  According to the important features of the invention, the furniture 1 comprises an electrical box 40 rigidly but removably associated with the chassis 12, and which contains all of the electrical devices necessary for the operation of the furniture 1, in particular the motorized locking means 16 / unlock

  and the means 17 for controlling the unlocking.

  11 This housing 40 is for example made of folded sheet. It forms a support plate for the motor 28, the gear train 36, the various contactors 33, 34, 35, the relay 38, the accumulators 29, the charger / rectifier device 30, the control means 17, the socket of electrical connection 31. It also supports on its front face 41, in addition to the control means 17 and the electrical outlet 31, an indicator light 42 indicating that the charger / rectifier device 30 is in the active state, and means 43 to lock forming a general switch for the electric power supply to the motor 28 by the accumulators 29 and / or the charger / rectifier device 30. The housing 40

  also supports an end of travel stop 44 of the unlocking

  lage, and an end of travel stop 45 of the locking associated respectively in the vicinity of the limit switches 33 for unlocking, and 34 for locking to protect these contactors. The housing 40 is inserted into a corresponding housing 46 formed in the chassis 12 and opening onto the front face 3 of the trunk 1. When the housing 40 is in place in the housing 46, its front face 41 is flush and comes in extension of the face front 3 of the trunk 1 .. The housing 40 is blocked embedded in the housing

  46 of the chassis 12 by removable association means, for example

  ple a device 47 with lock, integral with the left lateral face 5 of the boot 1. This device 47 with lock comprises by

  example a rotary bolt which comes to cooperate with a solid strike

  re of the side wall of the housing 40. The housing 46 also comprises means for guiding and supporting the housing 40

  facilitating its insertion and extraction and ensuring its hand-

  yours in the housing 46. These guide and support means are preferably simply made up of plates or slides

integral with the chassis 12.

  The electrical operating diagram is shown in FIG. 8. The accumulators 29, for example made up of eight

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  1.2 volt / 1.2 V / 1.2 Ah cadnium-nickel cells, are con-

  connected at the output and in parallel of the charger / rectifier device

  seur 30. The indicator light 42 is associated with this device 30 to indicate its operation. A fuse 48 is also

  advantageously associated with the charger / rectifier device 30.

  The socket 31 makes it possible to supply the charger / rectifier device 30

  220 V, 50 Hz alternating current generator.

  lock catcher 47 is connected in series to the positive output terminal

  49 of the charger / rectifier device. The timing device

  tion 39 advantageously comprises a capacitor 51, a resistor

  ce 52, and a transistor 53. This timing device 39 is controlled by the push button 17 forming the unlocking control means. The timing device 39 controls the relay 38 for reversing polarities. In the diagram, this relay 38 for supplying the motor 28 is shown twice to indicate how the reversal of polarities is controlled by the timing device 39, and how, moreover, this relay 38 is actuated by the push button 17 of ordered

  unlocking, and allows to power the motor 28.

  In FIG. 8, the relay 38 forming four switches 54,, 56, 57, is shown in its initial state, that is to say corresponding to the closed / locked position, the push button 17 not being actuated. When this push button is pressed

  17, after putting the device into service thanks to the interrupt

  with lock 47, the push button 17 triggers the time delay 39. Simultaneously, the push button 17 closes the switch

  54 connected to the negative terminal 50, and connected in series to the contact

  unlocking limit switch, opens the switch connected to the positive terminal 49 and connected in series with the

  interlock limit switch 34, these two

  tactors being connected in parallel to a common terminal 58 of the motor 28, 'opens the switch 57 connected to the negative terminal and to the positioning switch 35, and closes the switch

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  56 connected to the positive terminal 49 which, in parallel with the position switch 35 to the other supply terminal 59 of the

motor 28.

  These four switches 54, 55, 56, 57 of the relay 38 remain in the same state until the time delay 39 controls the relay 38, which has the effect of resetting these switches

  54, 55, 56, 57, in their initial state as shown.

  When the slide 2 is in the closed / unlocked position, the position switch 35 closes. When the output shaft 37 reaches the end of unlocking, the corresponding contactor 33 opens. Likewise, when the output shaft 37 reaches the end of locking, the corresponding contactor 34 opens. These different contactors 33, 34, 35 are recalled to their position

  initial as shown by springs.

  It is clear from reading the diagram in FIG. 8, that in the state shown of the switches 54, 55, 56, 57, the terminal 58 of the motor is connected to the positive terminal 49, while the other

  motor terminal 59 is connected to negative terminal 50 if the contact

  position sensor 35- is closed. In this supply state the motor 28 rotates in the locking direction until

  the end of locking switch 34 opens.

  On the contrary, in the other state of these switches 54, 55, 56, and 57, the terminal 58 of the motor 28 is connected to the negative terminal via the switch 54, and the other terminal 59 of the motor is connected

  to positive terminal 49 via switch 56. In this state of

  ment the motor 28 turns in the unlocking direction

  until the end of unlocking contactor 33 opens.

  The output shaft 37 of the gear train 36 has a rod rigidly associated transversely with this shaft 37 and which cooperates with the limit switches 33, 34, and with the stops 44, 45. This output shaft 37 is disposed so as to extend laterally towards the inside of the boot 1, that is to say to the right if the housing 46 is located to the left of the drawer

  2 as shown, to cooperate with a device 61 for trans-

  mission. This transmission device 61 controls at least one locking / unlocking fork 62 associated with the chassis 12 pivoting with respect to a horizontal, transverse pivot axis 63, and coming to cooperate with a horizontal stud 64,

  transverse integral with the drawer 2. The device 61 for transmitting

  To do this, there is a horizontal, transverse upper shaft 65 of which a free end 66 cooperates with the shaft

  output 37 of the gear train 36 secured to the housing 40.

  The output shaft 37 drives the transmission shaft 65 in rotation

  tion. However, when the drawer 2 is in the closed / open position

  rusted, the shaft 37 can be separated from the shaft 65 of the device

  tif 61 of transmission. To do this, the output shaft 37 of the gear train 36 advantageously comprises a flat which is engaged in a radial slot 67 of the free end 66 of the transmission shaft 65, this radial slot 67 extending substantially horizontally when the drawer 2 is in the closed / locked position. Another radial, vertical slot 68 is provided at the free end 66 of the axis 65 for the rod 60 of the output shaft 37. The transmission shaft 65 is mounted in rotation relative to the chassis 12 by means of support bearings 69. The transmission shaft 65 controls the movement of each fork 62 (FIG. 7a, 7b), by means of a rod integral in rotation with the shaft 65, and of a connecting rod 71 of articulated connection by one of its ends at the free end of the rod 70 by a hinge pin 72. The connecting rod 71 is articulated at its other end to the fork 62 by a hinge pin 73 distant from the axis 63 pivoting

this fork 62.

  Preferably, in particular in order to avoid thermal bridges between the chassis 12 and the element 11 forming the container of the drawer 2,

  each transverse stud 64 of the drawer 2 cooperating with a four-

  chette 62, is rigidly associated with the free end 74 forming a yoke of an arm 75 rigidly associated with the front wall 9 of the drawer 2 and extending perpendicularly inward 15 from

of this wall 9. There are preferably two forks 62 located symmetrically

  ment on either side of the drawer 2, and cooperating respectively with two studs 64 carried by two arms 75 integral with the

  front wall 9 of the drawer 2. The shaft 65 of the transmission device 61

  ssion then commands two bielles-

  your 70 and two connecting rods 71 which act themselves respectively and in synchronism on the two forks 62 to drive them in rotation around their pivot shaft

63. (Figure 6).

  The two arms 75 are rigidly associated with the front wall 9 of the drawer 2 in the vicinity of its lateral edges 20 so as to cooperate respectively with the forks 62 through two orifices 76 formed in the rebate 21 of the chassis 12. The left arm located near the electrical box 40 cooperates,

  when engaged in port 76 in the closed / unlocked position

  rusty drawer 2, with a tongue 77 mounted on the chassis

  12 and which cooperates itself with the position switch 35.

  The operation of the transmission device 61 and the

  chette 62 appears clearly in FIGS. 7a and 7b. When the drawer 2 is in the closed / unlocked position (FIG. 7a), the tongue 77 actuates the position switch 35, and, when the delay time To has elapsed, the electric motor 28 drives the output shaft 37 in rotation in the direction of locking, which itself controls the rotation of the transmission shaft 65, of the link 70, of the link 71, and therefore of the fork 62 around its axis 63. Consequently, the stud 64 which is opposite the range 62 when the drawer 2 is in the closed / unlocked position, is engaged in the fork 2 during its rotation, and the drawer 2 is thus placed in the closed / locked position (FIG. 7b)

  In the open position, even if the motor 28 accidentally drives-

  Lement the fork 62, it has no effect on the drawer 2 since the pin 64 is remote from this fork 62. Thus, according to the invention, the means 16 for locking / unlocking are completely dissociated from the drawer 2 and do not may have no effect on this drawer 2 even accidentally when this drawer

2 is in the open position.

  In a particularly advantageous embodiment but not shown, the pivot axes 63 of the fork 62 and articulation 73 of the connecting rod 71 on the fork 62 can be placed so that this stud 64 is substantially aligned horizontally with the axis swivel 63 of the fork

  62, but opposite the wall 9 of the drawer 2, in the closed position / -

  locked. Such an arrangement ensures mechanical locking.

  that of drawer 2. However, it requires a slight flexibility or an articulation of the arm 75 so that the stud 64 can pass

  under the pivot axis 63 of the fork 62.

  When the drawer 2 is in the closed / locked position, that is to say in its normal safety position, the user to open the drawer 2 must insert the key in the switch means

  with lock 43, then press push button 17. If the device

  if it is working, the drawer 2 is then placed in the closed position / -

* unlocked by rotating the fork 62, and the drawer 2 can be easily opened from this position by simply pulling on the handle 10. In case the device

  would not work in response to pressing the push button

  evening 17, the accumulators 29 are discharged, or one of the elements of the furniture 1 has failed. In such a case, the user will connect the electrical box 40 to the mains by means of the socket 31. If the light 42 lights up, the charger / rectifier device 30 is then in operation, and a new action on the button pusher 17 must operate the motorized locking / unlocking means 16. Otherwise, intervention is required on the electrical box 40. To do this, simply unplug the mains, insert the key in the device 47 with lock to release the box 40, and pull this box 40 forward to examine its various constituents. The output shaft 37 of the locking / unlocking means 16 cooperates with the input shaft 65 of the transmission device 61 so that the electrical box 40 cannot be extracted outside

  of the chassis 12 only when the drawer 2 is in the closed position / ver-

  rusty. But in case of failure, in normal position, the drawer 2 is necessarily in the closed / locked position and it is

  why the housing 40 can be easily removed. After extrac-

  tion, the drawer 2 can optionally be operated manually

  from the closed / locked position.

  The handle 10 is preferably shaped so as to offer a relatively weak grip to prevent the user from being able to

  force on this handle and on drawer 2 in the direction of the

  if one of the mechanical elements of the device 61 for trans-

  mission was blocked especially in the closed / unlocked position

rusty.

  The invention can be the subject of multiple variants and applications.

  obvious to the skilled person not limited to the mode of realization

  preferential sation shown in the figures and described above, given only by way of example. For example, the motorized locking / unlocking means 14 can be hydraulic or pneumatic instead of being electric, as well as the parts

which are common to them.

Claims (16)

  1. Safety furniture for precious objects, comprising a frame (12), a drawer (2) mounted on this frame (12) by means (13) of guide, characterized in that it comprises: - means ( 14) non-motorized drawer return (2) from any open position in which the interior (15) of the drawer (2) is accessible towards a closed / unlocked position in which the interior (15) of the drawer (2) is completely concealed and from which the drawer (2) can be pulled manually in the open position against the return means (14), the return means (14) being active to return the drawer (2) to the position closed / unlocked as soon as it is released from any open position, - motorized active locking / unlocking means (16)   between the closed / unlocked position and a closed / locked position   rusty from which the drawer (2) can no longer be   opened manually, these motorized locking / detaching means (16)   locking automatically recalling the drawer (2) in the closed / locked position, - unlocking control means (17) which, when actuated in the closed / locked position, trigger the unlocking of the drawer (2) and its setting in closed / unlocked position by motorized locking / unlocking means (16). 2. Furniture according to claim 1 characterized in that it comprises a delay device (39), and in that, after expiration of the delay time To, the motorized means (16)   locking / unlocking remind the drawer (2) in posi-   closed / locked from the closed / unlocked position   rusty. 3. Furniture according to claim 2 characterized in that the timing device (39) is triggered by actuation   on the unlocking control means (17). \   4. Furniture according to any one of claims 1 to 3,   characterized in that the drawer (2) has a front wall (9) and at least one container element (11), in that the frame (12) defines a frame (18) for the front wall (9) of the drawer (2), and in that, in the closed / locked position,   this front wall (9) is completely embedded in the frame-   ment (18) and the outer front face (19) of the wall (9) of the   drawer (2) is flush with the front face (3) of the furniture.   5. Furniture according to any one of claims 1 to 4,   characterized in that in the closed / unlocked position, the front wall (9) of the drawer (2) projects from the front face (3) of the furniture (7) while obscuring the interior (15) of the drawer (2) and leaving only the front face (19) and a flat part visible   peripheral edges (20) of this wall (9).   6. Furniture according to any one of claims 1 to 5,   characterized in that the return means (14) comprise an elastic traction member (14), of great length which extends when opening the drawer (2).   7. Furniture according to any one of claims 1 to 5,   characterized in that the return means (14) are constituted   an inclination of the guide means (13).   8. Furniture according to any one of claims 1 to 5,   characterized in that the return means (14) are constituted   of a weight lifted when the drawer (2) is opened.   9. Furniture according to any one of claims 1 to 8,   characterized in that the motorized locking / unlocking means (16) comprise a direct current electric motor (28), accumulators (29), a charger / rectifier device (30), limit switches (33, 34 ), of position (35) of the drawer (2), a gear train (36) cooperating with the motor shaft (28) and comprising an output shaft (37), and a time relay polarity reverser (38 ) feed   of the motor (28), this relay (38) including the time delay (39).   10. Furniture according to any one of claims 1 to 9,   characterized in that it comprises means (43) with a lock forming a general switch for the electric power supply to the motor (28)   by the accumulators (29) and / or the charger / rectifier device sister (30).   11. Furniture according to any one of claims 1 to 10,   characterized in that the output shaft (37) of the locking / unlocking means (16) cooperates with a device (61)   transmission controlling at least one fork (62) of ver-   rusting / unlocking associated with the chassis (12) pivoting with respect to a transverse horizontal axis (63) and coming to cooperate   with a transverse stud (64) integral with the drawer (2).   12. Furniture according to claim 11, characterized in that   each transverse stud (64) of the drawer (2) is associated rigidly   lying at the free end (74) forming a yoke of an associated arm (75)   rigidly to the front wall (9) of the drawer (2) and extending perpetually   diculately inward (15) from this wall (9).   13. Furniture according to any one of claims 1 to 12,   characterized in that it comprises an associated electrical box (40)   rigidly but removably folded to the chassis (12), and which contains all of the electrical devices necessary for the operation of the furniture, in particular the motorized locking / unlocking means (16) and the control means (17) unlocking.   14. Furniture according to claim 13, characterized in that   the output shaft (37) dcs means (16) dc locking / unlocking   The thread cooperates with an input shaft (65) of the transmission device (61) so that the electrical box (40) can only be removed from the chassis when the drawer (2) is in closed / locked position.   15. Furniture according to any one of claims 13 and   14, characterized in that it comprises a device (47) with lock   blocking the housing (40) embedded in the chassis (12).   16. Furniture according to any one of claims 11 to 15,   characterized in that the transmission device (61) comprises two forks (62) arranged on either side of the drawer (2), cooperating respectively with two studs (64) carried by two arms (75) rigidly associated with the wall front (9) of the drawer (2) in the vicinity of its side edges (20), these forks   (62) being controlled respectively and in synchronism in rotation   tion by means of two rods (70) integral with   the transmission shaft (65) and two connecting rods (71).