FR2532356A1 - DRAWER LATCHING METHOD AND LOCKING DEVICE - Google Patents

Abstract

LOCKING PROCESS FOR DRAWERS AND LOCKING DEVICE. EACH DRAWER 26, 27 OF A CABINET IS ASSOCIATED WITH A LOCKING DEVICE 7 AND A LIFTING DEVICE 5 INTENDED TO LIFT AND LOCK THE LOCKING DEVICE 7. WHEN A DRAWER 26 IS PULLED, THE LIFTING DEVICE 5 IS MOVED THROUGH THIS BY MEANS OF A FINGER OR A CAM 9 PENETRATING INTO THE LIFT 5. ON ITS SIDE, THE LIFT 5 PUSHES THE LOCKING UNIT 7 UP AND LATCHES IT IN POSITION RAISED. WHEN THE LOCKING DEVICE 7 THAT IS ASSOCIATED WITH THE DRAWER WHICH IS PULLED IS LIFTED, THE OTHER LOCKING DEVICES 7 ARE ALSO LIFTED BY THE CONNECTION ELEMENTS 8 AND LOCK THE DRAWERS 27 WHICH ARE NOT OPEN.

Description

The present invention relates to a method of ver-

  rusting drawers arranged one above the other to prevent more than one drawer from being moved out, including interlocking locking members which lock the other drawers in a closed position.

  when you pull one of the drawers.

  It also relates to a blocking device

  for cabinet drawers with several drawers

  one above the other, each drawer being

  to a locking member connected to a rod that can be de-

  placed in the vertical direction and is moved when a drawer is pulled by a cam mounted on the latter and in the vertical direction while the other locking members are moved by the rod so that the drawers closed holy

locked.

  It also concerns the use of the device

  in a cabinet with several drawers

  perposés. When it comes to drawer storage cabinets

  such as those used to store

  tools or parts of machines, there is the danger that after having pulled more than one drawer the akmoire will topple forward if it is not attached to the

floor or wall -

  We can avoid this tipping by making sure that we can open only one drawer at a time while

the others remain locked.

  There are already known a number of locking devices by means of which, when one drawer is pulled, the others are automatically locked. Thus, US Pat. No. 2,719,770 discloses a locking device according to which are mounted on a movable rod vertically mounted on the rear wall of the cabinet, which can be fed by a stud welded to the rear side of the drawer from a locking position of the drawer to a position which releases the drawer. blocking device has an input cam and an output cam which, in cooperation with the spool pin, determines a vertical movement of the locking member When a drawer is pulled out, the corresponding locking member and all the other locking members attached to the rod are pushed

  downwards A nose provided on the locking devices is

  then drop to the front of the nipples of other drawers and locks them in their retracted position When pushing back the open drawer, the stud on the input cam

  returns the locking member to the starting position and releases

rust the other drawers.

  This known device has the disadvantage that in the case where the locking members, because of their own weight and the weight of the rod that connects them, inadvertently slip from their starting position which is loose when all the drawers are retracted, it becomes impossible to open the drawers without dismantling or destroying the cabinet. This danger appears especially during

  long-term transport on roads or on

  buildings and often before the first use

of the cabinet.

  To avoid this drawback, US Pat. No. 3,874,755 proposes to provide the closing movement by lifting the locking member.

  which includes an input and output cam is attached to the

  roir; the nipple and locking nose are attached to the

mobile age vertically.

  This embodiment avoids the danger of a

  unintended blockage of all drawers by

  In this device,

  naked, shaking as they often occur on the

  places of manufacture may, however, release the provisions

  locking the drawers still closed when the rod slides down with the locking nose due to

his own weight.

  In both of these embodiments, friction brakes can only maintain rods in the position they occupy if the force of the

  braking force or the restraining force is too great, it

  It is impossible to move the rods by means of the cams 2. 3. with the desired facility. -The two embodiments are, in addition, tainted with another disadvantage coming from the fact that the locking member or the nose of the drawer or the nipple

  of the cabinet must be mounted with relative accuracy.

  pushed against each other. For reasons of

  tolerance, this result can only be achieved

  fictionnally when it comes to sheet metal cabinets.

   Moreover, when the cabinets are placed on uneven floors, there can be an unacceptable mutual displacement between the locking member and the nipple when a load is applied to one side or when one pulls on one side.

wide drawers.

  German patent N 21 33213 describes another

  drawer locking device On a vertically mounted rod

  movably on the side of the drawers are arranged stirrups with two arms protruding into the part occupied by the drawer at the height of each drawer When pulling a drawer, because of the rising cam which is part of the drawer, the rod is raised by the cooperating stirrup arm

  with it, with the other stirrups The second arm of the

  sorting occurs during the lifting movement in the area of an abutment fixed to the bottom of the drawer above and thus blocks the drawer that can no longer draw A disadvantage of this known locking device is that parts of the blocking device must be provided both in the bottom of the drawer and on the c 8 tee

  When it comes, in particular, to

  for hanging folders, the guide cam located on the

  above can only be applied outside the country.

  Lateral King Anyway a subsequent editing in

  existing cabinets are excluded.

  The object of the present invention is to avoid

  disadvantages of the known embodiments.

  In particular, the object of the invention is to provide

  a locking device which can be

  in already existing cabinets, the parts of which are

  can be easily exchanged when necessary.

re

  Another object of the invention is to provide a

  blocking positive whose parts retain a position

  stable in the locked state as well as in the unlocked state

  rust. Another object of the invention is that the large clamping tensions that appear during machining

  sheet metal can be accepted by the blocking device.

  cage. According to the invention, these goals are achieved; by a method characterized in that when pulling a drawer, its locking member is lifted by a lifting member actuated by the drawer and is then held by the retainer in the raised position preventing unintended unlocking; by a device characterized in that

  is associated with each locking member a lifting member

  intended to move the locking member, which lifting member may be driven by a protrusion of the drawer

who cooperates with him.

  Compared with known blocking devices, this

  he of the invention offers a series of advantages.

  A particular advantage of the invention consists in the fact that the blocking device is subdivided into

  a lifting member and a locking member

  particular, it is advantageous that in the locked state the organ

  blocking may rest on a fixed surface and, for example,

  horizontal plane; the release of the lock due to shaking or wear of the retaining member is thereby excluded. Another advantage of the invention is that only small masses have to be moved; we can open and close the drawers without having to apply them

an additional force.

  Another advantage comes from the fact that during the

  brication and assembly, only weak requirements are

  accuracy of the parts or the assembly.

  Another advantage is that, thanks to the opening of the funnel-shaped bore which has an appropriate width,

  there is compensation for the inaccuracies of the cabinet and the disc

  positive blocking and there can be no manipulation 4. rronée can lead to the rupture of such a part

  that the breaking of the control finger.

  Another advantage is that when changing the

  the lifting device, the locking device can be used

  read as central locking.

  Another advantage is that

  Liaisons who play games can not get caught.

  Another advantage of the invention consists in the fact that the locking device can be mounted in

  its set outside the wardrobe.

  Another advantage of the invention is that the

  positive blocking has reduced dimensions in depth

  and can therefore be mounted practically in all

res.

  Other features and advantages of the invention

  will be apparent from the following description, for example

  plies of realization No limitation, illustrated on the

attached drawings, in which.

  Fig 1 is a perspective view of the indi-

  viduals of the blocking device; Fig 2 is a perspective view of the unlocking device in the unlocked state; Fig 3 is a perspective view of the locking device which the locking member is raised; Fig 4 is a perspective view of the device of

  blocking used as a switching device for a

positive central locking;

  Fig 5 is a plan view of the blocking device

ge (locked);

  Fig 6 is a plan view of the blocking device

  ge (unlocked); Fig 7 is a cross section of a drawer cabinet; and Fig 8 is an elevational view through the

plan VIII-VIII of FIG.

  The blocking device consists essentially of

  by a base 1 comprising two grooves T or dovetail 2, 3 substantially perpendicular to one

  relative to the other, a lifting member 5 comprises

5.

  an inclined plane 4 forming a sliding surface, an or-

  locking member 7 comprising a bent end 6, connecting elements 8 and an operating element 11 comprising a control finger 9 and a retaining member 10 -Fig 1-. Both the lifting member 5 and the locking member 7 comprise guide portions 12, 13 in the form of a T-piece or a dovetail, which are adapted to the grooves 2, 3 which guide the members 5, 7 in a movable manner. in the base 1 An end piece 14 prohibits the exit of the organ

  guide 5 of the guide groove 2 (Fig 2).

  In the T-shaped recesses of the

  13 after insertion into the guide groove 3, the connection is ensured between the locking member 7 and the elements 8 but loosely so that lack of precision also well in the individual pieces that

  those which can arise during the assembly can not provoke

  In the lifting member 5 there is provided a bore 16, the opening of which preferably has the form of a funnel whose central axis is situated in the horizontal plane and forms an angle 450 + 100,

  and preferably 450, with respect to the guide groove

  ge. On the actuator It is planned the finger

  such as the projection 9, also forming a

  "and which can penetrate, through the bore 16, into the body

  uprising 5 and displace it. The mutual position

  the lifting member 5 and the locking member

  7 shown in FIG. 2 corresponds to the unlocked position

  rusted, the operating element 11 being omitted from the drawing for greater clarity The control finger 9 is in this position completely inside the bore 16, the lifting member 5 accordingly abutting on the left against the end piece 14 and the bent end 6 of the locking member 7 under the opening of the body of the

retained 10.

  In FIG. 3, the device for blocking

  6. cage in the locking position & the lifting member is moved to the right and lifted the locking member 7 which is then on the surface 17 which is

  connected to: inclined plane 4 The control finger 9 of the

  the element of maneuver 11 is completely outside

bore 16.

  Preferably, the base 1 comprising known fastening elements (screws, etc.) is fixed on a profiled console 18 The console 18 may comprise slots or holes 19 in which the screw can be screwed or suspended.

base 1 (Fig 4).

  In FIG. 4 is shown a blocking device

  comprising a lifting member 20 provided with a crank

  21 which can be brought into engagement with a toothed wheel 22 The free end 23 is driven into a hole 24 provided in the bracket 18, and a closure rod whose section, preferably, is not round, connects

  gear 22 to a closing cylinder (not shown in FIG.

  té) The rotation of the toothed wheel 22 by means of a key has the same effect as the displacement of the control finger 9 in the bore 16; that is to say a displacement of the organ

  blocking 7 upwards and locking it.

  On the plan views of the guide member shown in FIGS. 5 and 6, the cooperation of the individual members 5 and 11 is shown in detail. In FIG. 26, the slide 26 (represented by its rear wall) is -

  posed partially open The finger 9 of the element of maneuver

  He who is attached to the bottom of the drawer 26 is outside

  of the bore 16 which is oblique. The same is true of the

  a restraint system 10 that is outside the area of cooperation

  end of the associated blocking member 7.

  The lifting member 5 is pushed completely to the right by the finger 9 and thus raised and passed 1 '

  contact member 7 on the oblique plane 4.

  Fig 7 shows the deblocking device while the spool 27 is retracted The lifting member 5 is

  pushed to the left by the finger 9, so that 1 '-

  The locking member 7 is not lifted by the lifting member 7. 8. As a result, the end 6 of the locking member 7 no longer cooperates with the retaining member 10 either. This situation exists when all drawers

26, 27 are closed.

  Three drawers 26, 27 are shown in section in a cabinet 28 in FIG. 7 The central drawer 26 has been removed and its locking device is therefore in the

  position shown in Fig 5 Blocking devices

  other drawers 27 are in the position of FIG. 6,

  that is to say in the locked position in which the end

  mité 6 enters the retaining member 10.

  Fig 8 also shows the positions of the elements

  of the blocking device as they present themselves.

  Fig 7 Thanks to the locking member 7 of the drawer

  central 26, all the other locking members 7 are also

  raised through linkages 2

  and the ends 6 are brought into engagement with the or-

  10, which means that all the drawers are locked in the closed position, with the exception of the one that has been pulled out. In order to ensure the locked position according to FIG. 3, a surface is provided, following the inclined plane 4. 17 horizontal or slightly sloping in the direction

  opposite to that of plane 4, this surface 17 preventing the

  lock 7 to slide down when it is po-

  raised position The locking position of the

  blocking 7 can therefore only be achieved by moving

  voluntary organization of the lifting organ 5 by means of

drawers 26, 27 or key.

  When the open drawer 26 is closed, the finger 9 pushes the lifting member 5 towards the left when it

  penetrates the bore at an angle 16, which makes the or-

  Biocage ganes 7 which are connected to one another by the connecting elements 8 are brought back by their own weight.

  in their starting position lowered.

  As shown in FIG. 4, a lifting member

  which includes a rack 21 can perform the maneuver

  The lifting member 20 is in this case pushed to the right not by the finger 9 but by the toothed wheel 22, which raises, by means of a key. intermediate of the plan

  inclined 4, the locking members 7 of all the

  26, 27 The blocking devices thus fulfill

  the function of a central lock for the whole of the

  memory; an additional closure device therefore becomes

  tile. Individual blocking devices can

  be mounted in advance outside the cabinet 28 on the

  sole 18 in the intervals determined by the height of the drawers 26, 27, and then mounted in new cabinets

  or already existing cabinets The wheel den-

  22 and the rack 25 are put in place by the following

  te, the end 23 (Fig 4) of the shaft to be only depressed in the corresponding hole 24 practiced in the

  console 18 and enter a lock in the front of the door.

  moire The operating element It is mounted in the bottom of the drawer or on its back wall Naturally, the element

  It can also be constituted by a part of the drawer.

  All the components of the blocking device can

  may be made of synthetic material presenting

  good sliding properties, or metal

  of the console 18 may be provided in advance with stamped holes 19, 24 (FIG.

  fixing elements of the base 1 or the shaft 23, and

  to be used also to fix the console 18 on the

rear wall of the cabinet.

9 - 10.

Claims (14)

  A method of locking drawers arranged one above the other to prevent more than one drawer from being moved out, comprising locking members connected to each other which lock the other drawers in the closed position when pulling one of the drawers, characterized in that, when a drawer (26) is pulled, its locking member (7) is lifted by a member   lever (5) actuated by the drawer (26) and is then   held by the retaining member (5) in the raised position   vee preventing ug unintentional unlocking.   Process according to Claim 1, characterized in that the lifting member (5) which actuates the operating member (7) is driven by a cam (9) provided on the drawer (26).   Process according to Claim 2, characterized   in that the cam (9) penetrates into a depression of the   uprising (5) which is closed on all sides.   4 Method according to claim 2, characterized in that the lifting member (5) is pushed by the cam (9) when the drawer (26) is pulled on a path which   is perpendicular to the path followed by the cam (9).   Locking device for cabinet drawers comprising several drawers arranged one above the other, each drawer being associated with a locking member connected to a rod which can be moved in the vertical direction and which is displaced, when a drawer is pulled drawer, by a cam mounted on the latter and in the vertical direction while the other locking members are moved by the rod   in such a way that the locked drawers are locked,   characterized in that it is associated with each organ of   cage (7) a lifting member (5) for moving the locking member (7), which lifting member (5) can be driven by a projection - (9) of the drawer (26, 27) which cooperate with him.   Locking device according to claim 5, characterized in that the locking member (7) and the locking member   uprising (5) are movably mounted in sliding he.   (2, 3) which are perpendicular to each other by   port & the other and which are practiced in a base (1).   7 Locking device according to claim, characterized in that the lifting member (5) comprises a bore (16) inclined relative to the slide (2).   8 Device according to claim 5, characterized   in that the cam (9) is formed on the slide (26,   27) in the form of a finger-shaped projection disposed   alignment with the axis of the bore (16) and which can be in this one.   9 Locking device according to the claim   7, characterized in that the bore (16) forms with the slide (2) an angle o of 450 100.   Locking device according to claim, characterized in that the locking member (7) can be   raised and locked by the lifting member (5).   11 Locking device according to the claim   characterized in that the lifting member (5) comprises   takes an inclined sliding surface (4) intended to   lift the locking member (7) and a locking surface   ge (17) substantially perpendicular to the slide (5) of the locking member (7) and intended to lock the organ blocking (7).   Blocking device according to claim 1, characterized in that the locking member (7) comprises   a curved end (6) which cooperates with the body member   holding (10) on the drawer (26, 27).   13 locking device according to claim 5, characterized in that the rod which connects the locking members (7) is constituted by connecting elements (8) which can be respectively inserted between two bodies of   blocking (7) arranged one above the other.   Locking device according to claim   13, characterized in that the length of the connecting elements   sound (8) corresponds to the height of the associated drawer (26,27). 12 2532356   Locking device according to the claim   5, characterized in that a lifting member (20) comprising a rack (21) is associated with the   blocking (7), rack (21) by means of which the orga-   The lifting device (20) can be moved from the outside by means of a locking wrench according to claim 5 in a cabinet comprising several   drawers arranged one above the other.