FR2569438A1 - CONVICTION DEVICE FOR A SAFE DOOR OR THE LIKE - Google Patents

Abstract

THIS DEVICE INCLUDES A MOVABLE BAR 4 CARRYING PENES 24 AND CONTROLLED BY A HANDLE 22. THE BAR IS LOCKED IN THE LOCKING POSITION BY A LOCKING BAR WHICH ENGAGES IN A NOTCH 5 OF THE BAR AND WHICH IS HELD IN HIGH POSITION BY GORGES 17 OF A COMBINATION LOCK. TO AVOID FORGETTING TO BLURGE THE COMBINATION, A SPRING RATCHET 14, CONTROLLED BY A DRIVE BAR 13 THROUGH A LEVER 9 CONNECTED TO BAR 4, BY A SPRING ROD 7, ATTACK A FINGER OF THROAT 17 WHICH IS SET FIRST TO SHIFT THIS THROAT.

Description

The present invention relates to a device for

  lock for a pivoting door on a safe

  strong or similar device and, more particularly, to an improvement made to a locking device of the type which comprises a combination lock and a movable plate adapted to perform a locking action, in

  which the movable plate is provided with a locking bar

  ge at its front end, on which at least one bolt makes

  projection to engage in a corresponding hole in the trunk

strong or similar device.

  As is well known, a safe or the like is usually equipped with what is called a

  combination lock. Closing the combination lock

  sound is normally carried out by phases consisting in closing a door, thereby causing bolts fixedly attached to a movable plate to penetrate into corresponding holes in the safe deposit box and then turning dials designed to form the combination of figures for suppressing the combination lock condemnation and a dial must then be turned a number of turns greater than a specified number. However, it has been found to occur

  frequently in the case of the classic locking device

  sique of the type comprising a combination lock which does not carry out the complete operations of closing and

  condemnation of a safe if one is in

  emergency and that the last gesture was to simply close the door. Another problem is that the number lock remains unlocked after the execution of the daily locking operation.

  because an operator forgets to turn a dial of a name-

  number of turns greater than the number specified. This means that the safe does not guarantee a locking function

completely safe.

  The present invention has been designed to solve these problems and its object is to provide an improved locking device for a door pivotally mounted on a safe or similar device, of the type comprising a combination lock and a movable plate adapted to execute a locking action in which it is ensured that the movable plate and the locking bar are

  simultaneously actuated by the operation of a handle

  while a plurality of grooves designed to define the combination of the condemnation digits for the combination lock are automatically rotated so that this lock is brought into a locked state in all

the operating conditions.

  Another object of the present invention is to provide an improved locking device which is of a simple structure and which can be manufactured at a price of

returns reduced.

  To achieve the aforementioned aims, there is provided, according to the present invention, a locking device for a door pivotally mounted on a safe or similar device of the type comprising a combination lock and a movable plate adapted to perform the action lock,

  in which the movable plate is equipped with a ver-

  rusting at its front end, on which at least one bolt protrudes to engage in a corresponding hole in the safe or similar device, characterized in that the movable plate is provided, on its lower edge, with a

  condemnation notch in which one condemn bar

  tion is adapted to engage when locking is carried out, in that the movable plate is coupled to a lever plate by means of a sliding rod and a helical spring arranged in compression on this rod,

  and that the lever plate is in turn coupled to a plate

  that actuation adapted to move on a certai-

  ne distance defined by elongated holes, together with a pawl mounted pivoting on the side of the actuating plate and in that a part of the housing of the lock is cut to let the pawl penetrate inside, and that the one of the grooves used to define the combination of unlocking digits of the digit lock is equipped with locking means produced under the

  shape of a finger with which the pawl engages.

  In the locking device according to the invention, the movable plate, which constitutes one of the most

  important, can be oriented in any direction

  along the inside wall of the door but, in general

  neral, it is arranged in a horizontal position. At one of the terminal parts of the movable plate, a bar

  is fixed to this plate while, at the au-

  Being the end part of this plate, a handle is mounted

  rotary to activate the locking device.

  The lever plate is mounted on a support rod in the middle of its length to rotate around this rod. To define the amplitude of movement of the movable plate and the actuation plate, two elongated holes are formed on each of these elements. The locking means mounted on the lower part of one of the grooves are preferably

  formed by a finger which projects on this throat.

  To prevent the pawl from rotating at an excessive angle

  sif, a lug is provided on the actuation plate and the pawl is adapted to turn towards the lever plate under

  the influence of the elastic force of a leaf spring.

  Other characteristics and advantages of the invention

  will appear during the description which follows. To the

  attached drawings, given only by way of example.

  Figure 1 is a perspective view of a safe provided with a door pivotally mounted on this safe, shown in the open state, and in which a locking device according to a preferred embodiment is mounted on the wall interior of the door; Figure 2 is a front view of an essential part of the locking device, shown on a larger scale; Figure 3 is a vertical sectional view of the locking device, taken along line I-I of FIG. 2; and Figure 4 is another view in vertical section of the locking device taken along line II-II of the

fig. 2.

  The invention will be described below in more detail with reference to the accompanying drawings which illustrate a

  preferred embodiment of the invention.

  A safe 1 has a door 2 rotatably mounted on this safe and to the inner wall of which are rigidly fixed two support rods 3. Each of the support rods 3 is engaged through an elongated guide hole 3 'formed

  in a movable plate 4, so that the latter can

  move left or right on a dis-

  tance which is defined by the length of the elongated guide holes 3 ′ In addition, the movable plate 4 is provided with a locking notch 5, provided in a predetermined position, on

  its lower edge and, moreover, it is provided with a ferru-

  re in L 6, rigidly fixed to its upper edge. A rod 7 is threaded through a hole in the fitting 6 so as to

slide through this hole.

  A lever plate 9 is rotatably mounted on a support rod 8 rigidly fixed to the interior wall of the door

  2 and an L-shaped fitting 10 is rigidly fixed to its ter-

  upper mineral such that the rod 7 is slidably engaged through a hole in said fitting 10. A helical spring 11 is disposed in the compressed state on the

  rod 7, between the L-shaped fittings 6 and 10.

  On the other side, the lever plate 9 is functionally coupled to an actuation plate 13, - at the level

  from its lower end part, said actuating plate

  ment 13 being mounted mobile by means of a pair of rods

  ports 12 which are engaged through elongated holes 13 '.

  A pawl 14 is pivotally mounted on the actuating plate 13 so as to rotate normally in the opposite direction to that of the needles of a watch, seen in FIG. 2, under the action of the elastic force developed by a leaf spring

  ', and a lug 15 protrudes from the action plate

  ment 13 to prevent excessive rotation of the pawl 14

  counterclockwise.

  The coupling between the lever plate and the actuation plate 13 is carried out by means of a combination comprising a pin 9 'provided on the lever plate 9 and

  an elongated guide hole 13 "made in the action plate-

  13 and through which said pin 9 'is engaged.

  The leaf spring 15 ′ is arranged by the actuating plate.

  ment 13 in such a way that its central part is wrapped

  tied around a 13 "'finger, the right end part, seen in the drawing, being anchored on a 13" "finger and the left end part being pressed against the surface

rear of pawl 14.

  To allow the pawl 14 rotatably mounted on the plate

  as actuation 13 to project freely, a part 16 "of the side wall constituting a lock case 16 'is cut out and a combination lock 16 is housed in the lock case 16'. The combination lock 16 comprises a plurality of grooves 17 which define a combination of figures suppressing the conviction of the

  locking device and among which the throat pos-

  an attractive figure which must be set first is provided, on its lower terminal part, with a finger which is adapted to serve as a locking protuberance. In the drawing, the reference number 16 "'designates a locking bar for the combination lock. 16 and the reference 16" "designates a locking rod suitable for moving

  vertically to engage with a lock notch

  cage 17 'formed in the groove 17 or disengage therefrom. In addition, the reference 19 designates a dial used to rotate the grooves 17, said dial being disposed outside of

door 2.

  On the other hand, the movable plate 4 carries an element

  coupling 4 ', which is rigidly attached thereto, and a turret

  lon 4 "protrudes from said coupling element 4 'so as to engage through an elongated guide hole 20' carried by a connection plate 20. A rotary shaft 21 is fixed to the lower end part of the plate link 20 and protrudes outside of door 2, a handle 22 being fixed to the outer end portion

of said rotary shaft 21.

  On the left end portion of the movable plate 4 is disposed a locking bar 23 rigidly fixed to this plate, while two locking bolts 24

  extend to the left from said ver- bar

  rust 23 to penetrate strike holes 25 mena-

  in locker 1, so that locking and unlocking

  locking is effected by movement of the mo-

  bile 4 to the left or to the right.

  In the embodiment shown, the strikes are located in the inner right wall of the trunk 1, seen in FIG. 1, but the present invention is not limited to this arrangement. Alternatively, they can be

  located on the inner left wall, in the upper wall

  or in the lower wall of the safe and it goes without saying that the direction of extension of the bolts 24 is determined

  depending on where the strike holes are placed.

  We will now describe below the operation of the

  locking mechanism according to the invention.

  To open the door 2 and move it away from the safe 1, the dial 19 is turned in the specified direction, by a predetermined number of turns, until each of the grooves 17

  take the position corresponding to the combination of numbers

  fres of predetermined locking, so that the locking bar 16 "'of the combination lock 16 is drawn down, the locking rod 16" "engaging the locking notch 17' of the groove. the handle 22 is actuated in the direction identified by the reference letter B in Fig. 2, the movable plate 4 is caused to move to the right (in the direction identified by the letter C),

  so that the bolts 24 emerge from the strike holes 25.

  Now door 2 is ready to open. At this time, the locking bar 16 "'of the combination lock 16 is kept clear of the locking notch 5 of the movable plate 4 and there is no functional connection

  between the 16 "locking bar of the combi lock

  naison 16 and the movable plate 4, so that the latter is ready to start moving. In this way, by turning the handle 22 to rotate the connecting plate 20 clockwise or counterclockwise, the

  movable plate 4 to move to the right or to the left

  che over the distance defined by the length of the elongated holes

ages 3 'and 13'.

  When we want to unlock the door 2, we turn the handle 22 and, under this effect, the movable plate 4 which is coupled to it via the connecting plate 20 moves to the right, so that the lever plate 9, which is coupled to the movable plate 4 is caused to rotate clockwise and that the actuating plate coupled to the lever plate 9 then moves to the left. This causes the pawl 14, rotatably mounted on the side of the actuation plate 13, to rotate normally in an anticlockwise direction under the influence of the elastic force of the leaf spring 15 'to

  engage with finger 18 located on the lower part

  throat 17 which is adapted to be adjusted first and which constitutes one of the plurality of grooves

  17 which define the numbers of the combination of the service

  combination rure 16. As described above, the

  ratchet 14 is rotatably mounted on the side of the mounting plate

  operation 13 to rotate normally anticlockwise under the influence of the elastic force of the leaf spring 15 'and, in this way, after

  being engaged with finger 18, it is brought to turn-

  clockwise. When it takes the position above finger 18, it rotates counterclockwise until

  that it abuts against finger 15 carried by the action plate-

13.

  We will now give the description of how

  combination lock 16 goes into condemned state

when door 2 is closed.

  The door 2 is closed by means of the handle 22 and, then, by turning the latter anticlockwise (in the direction identified by the reference letter A), the movable plate 4, with the locking bar 23 rigidly fixed on this plate, moves to the left (in the direction identified by the

  reference letter C '), under the action of the connecting plate

  its 20, so that the lever plate 9 coupled to the plate

  that mobile 4 is caused to rotate counterclockwise under the influence of force

  elastic of the helical spring 11 and that the action plate

  13 coupled to the lever plate 9 is moved to the right (in the direction identified by the reference letter D). At this time, the pawl 14 rotatably mounted on the side of the actuating plate 13 is engaged with the finger 18 located at the bottom of the groove 17 which is adapted to be adjusted first, and which constitutes the a

  of several grooves 17, however it is prevented from turning

  excessively counterclockwise

  of a watch by means of a finger 15 carried by the access plate

  operation 13. In this way, when the groove 17 is pushed

  seated by means of the pawl 14, it tends to rotate in the opposite direction to that of the needles of a watch. However, from

  makes the lock bar 16 "'of the lock

  hoeing 16 abuts against the lower edge of the mo- plate

  bile 4, it follows that the groove 17 can not rotate further in the opposite direction to that of clockwise. Since the movable plate 4 is functionally coupled to the lever plate 9 by means of the sliding rod 7 and the helical spring 11 disposed thereon, the movable plate 4 can move to the left by compressing the helical spring 11 although the movement of the actuation plate 13 and the rotational movement of the lever plate 9 are blocked. When the locking notch 5 formed in the lower edge of the moving plate 4 is placed in the vertical alignment of the locking bar 16 "'of the combination lock 16 during the movement of the moving plate 4 to the left, the 16 "locking bar is ready to engage in the notch

conviction 5.

  In this way, when the lever plate 9 rotates anticlockwise under the influence of the elastic force of the helical spring 11, the actuation plate 13 functionally coupled to the lever plate 9 is brought to move to the right, so that the finger 18 carried by the groove 17 is pushed by means of a ratchet 14 carried by the actuating plate 13 so as to rotate the groove 17 in the opposite direction to that of the needles d 'a watch and the locking rod 16 "" emerges from the locking notch 17'. The result is that the locking bar 16 "'of the combination lock 16 protrudes above the case 16 of the lock

  until it is engaged in the condemnation notch

  tion 5 of the movable plate 4. In this way, the door 2 of the

safe is doomed.

  Since the grooves 17 designed to define the numbers of the combination of the combination lock 16 have been turned in this way and the predetermined numbers of the combination of the combination lock 16 have already been

  scrambled, the lock is kept in the condemned state.

  As it is easy to understand by reading

  from the description given above, the locking device

  tion according to the present invention ensures that a combination lock is automatically put into the locked state simply by projecting a locking bar with a handle after the door has been closed on the trunk 1. It it is therefore not necessary to put the combination lock in a locked state by turning a dial of the combination lock by a number of turns greater than

  number of laps specified as is the case for

  classic condemnation. The result is to reduce

  considerably the time required to close and lock

  ler a door of a trunk or similar device.

  Another advantageous characteristic of the locking device of the invention is that it reliably avoids the disadvantage which occurs when the combination lock is not locked because the user has inadvertently forgotten to turn the dial d 'a number of

  turns greater than the number of turns specified after closing

  door measurement. Safe or similar device

  therefore enjoys great security.

  Another advantageous characteristic of the locking device according to the invention consists in that the combination lock can be put in the locked state

  by simply turning a handle, even in an emergency

agency. 1 1

Claims (7)

  1.- Locking device for a pivotally mounted door on a safe or similar device, of the type which includes a digit lock and a movable plate adapted to execute the locking action, said movable plate being provided at its front end of a locking plate on which at least one bolt projects to   fit into a corresponding hole in the safe or ap-   similar analogous, this locking device being characterized   laughed in that the movable plate (4) is provided with a locking notch (5) in which a locking bar (16 "') is adapted to engage when the locking is carried out, in that the movable plate (4) is coupled to a lever plate (9) by means of a combination comprising a sliding rod (7) and elastic means (11) arranged on this rod, and that said lever plate (9) is in turn coupled to an actuating plate (13)   suitable for traveling a specified distance, combined   tement with a pawl (14) pivotally mounted on said actuating plate (13) and in that part of the case (16 ')   of the lock is cut to leave the pawl (14) penetrated   trer inside this bootmaker and that one of the grooves (17)   used to define the numbers of the combination of the   combination rure is provided with locking means (18) with which the pawl engages.   2.- locking device according to claim 1, characterized in that the movable plate (4) is movably mounted along the inner wall of the door, in a horizontal position.   3.- locking device according to claim 1, characterized in that the lever plate (9) is mounted to rotate on a support rod (8) located in the part center of the lever plate.   4.- locking device according to claim 1, characterized in that the amplitude of movement of the movable plate (4) and that of the actuating plate (13)   are defined by elongated holes (3 ', 13').   5.- locking device according to claim 1, characterized in that the locking means provided on the groove (17) consist of a finger (18) which protruding on this throat.   6.- locking device according to claim   1, characterized in that a finger (15) is provided on the plate   actuation (13) to prevent the pawl (14) from rotate at an excessive angle.   7.- locking device according to claim 1, characterized in that the pawl (14) can rotate in the direction directed towards the lever plate (9) under the influence   of the elastic force of a leaf spring (15 ').