EP0480823A1 - Combination lock device - Google Patents

Abstract

The combination lock comprises a casing 10 fixed to a door. The side 10a of the casing is disposed inside the door and comprises knobs 45 for setting up a combination of data. After doing this, external knobs 36 protrude from the front surface 10b of the casing and are intended for setting up again the combination of data initially set up by the internal knobs 45 to allow the penetration of a push rod 61 which alone can displace a latch allowing the door to be opened. <IMAGE>

Description

The present invention relates to combination locks, that is to say locks in which a group of numbers or letters is entered by means of display buttons to arrange the mechanisms in a determined position so that after closing of the lock it is essential to restore the initial combination to allow opening.

In known devices, the combination of numbers or other data is achieved by buttons located outside of a door or a flap which includes the lock; this is the most frequent case for locks which are used in combination with locker room doors, cupboards or various safes.

The above arrangement means that the buttons can still be operated, which leads to various drawbacks.

For example, when a combination lock is used in public locker room doors, it is usual for the lock to be in the open position even though the door is closed, that is to say inscribed in its sleeping when the locker room is available. The combination must only be carried out after a user has taken possession of a cloakroom.

The same drawback can occur for automatic deposit doors, safe doors in hotels or banks, etc.

The invention creates a new combination lock which eliminates the above drawbacks while creating a very simple assembly, easy to produce industrially by modern mass production techniques, the lock being able, moreover, if desired, to be functionally associated with a coin mechanism.

According to the invention, the combination lock device into which a sequence of data forming a combination is entered by means of rotary knobs before the actuation of a bolt in the direction for which said bolt is locked with a strike, said combination to be reproduced to ensure the unlocking of the bolt, is characterized in that interior buttons for data entry are carried by the rear side of a housing containing a plate supporting external buttons complementary to the internal buttons, said plate being carried by an unlocking button guided in the front side of the housing and in a socket itself containing a pusher for actuating at least one slider passing through said unlocking button and said socket and bearing against the bolt so that said pusher causes the displacement of the slide, the bolt and the plate carrying the external buttons urs complementary to the internal data entry buttons by bringing this plate into a position for which organs for correlating the data entered by the internal buttons and data to be entered by the external buttons are spaced from each other, said button for unlocking carrying the support plate for the external buttons being in turn made maneuverable, for moving said plate in the direction causing a new displacement of the bolt, when the external buttons which it carries are brought into positions for which data entered by their operation make a correlation with the initial combination of data of the interior buttons carried by the rear side of the case.

Various other characteristics of the invention will also emerge from the detailed description which follows.

Embodiments of the object of the invention are shown, by way of nonlimiting examples, in the accompanying drawings.

Fig. 1 is a schematic plan view of a building element comprising the lock device of the invention.

Fig. 2 is a front view elevation of the exterior side of the combination lock apparent in FIG. 1.

Fig. 3 is a section seen along line III-III of FIG. 2.

Fig. 4 is a section seen along the line IV-IV of FIG. 3.

Fig. 5 is a schematic section seen substantially along the line V-V of FIG. 3.

Figs. 6, 7, 8 and 9 are partial elevation sections similar to FIG. 4 illustrating particular operating positions of the lock.

Figs. 10, 11 and 12 to 15 are elevations illustrating different characteristic positions of a coin mechanism appearing in fig. 2 and constituting a development of the invention.

fig. 1 schematically illustrates a door 1 articulated in a frame 2 and comprising a lock 3 whose bolt 4 is intended to cooperate with a keeper 5 disposed in the frame.

By way of example, the keeper 5 is said to be of the spring type, that is to say that it comprises a retaining body 6 pushed by an elastic element 7 intended to be compressed by the body 6 when the latter is pushed back by the bolt 4 of the lock 3. Preferably also, the bolt 4 is associated with a protective plate 8 to which it is rigidly connected and which is intended, in particular, to protect said bolt when the latter is engaged in the keeper 5.

It is obvious that the keeper 5 could be fixed and that the bolt 4 could, in this case, be of an elastic type, that is to say that it could be displaceable against the action of a spring equivalent to the elastic element 7 when the door 1 is pivoted in the closing direction.

Fig. 4 shows that the bolt 4 and the protective plate 8 are guided in a plate 9 constituting one of the sides of a lock housing 10 in the general shape of a parallelepiped.

The bolt 4 comprises a head 11 which carries the protective plate 8 and against which bears a compression spring 12 also bearing against the plate 9. The spring 12 has the effect of keeping the head 11 of the bolt 4 in abutment against a slide 13 guided in a bore of a stepped sleeve 14 guided in a hole 15 on the rear side 10a of the lock housing 10.

The shouldered bushing 14 supports at its end a ring 16 which is rigidly fixed thereto and which is guided in a casing 17 itself attached to said rear side 10a. The shoulder bush 14 is prevented from turning, for example by means of a lug 18 (FIG. 3) guided in a hole 19 in the casing 17.

A compression spring 20 is interposed between the rear side 10a of the lock housing and the ring 16 so as to always tend to bring the shoulder 14a of the bush 14 closer to the internal face of the rear side 10a.

The shoulder bush 14 is threaded with gentle friction in order to be able to slide on a neckline part 21a of an unlocking button 21 which projects from the front side 10b of the lock housing 10 passing through a hole 22.

Preferably, as shown in fig. 3, the button 21 is prevented from turning by a lug 23 carried by the front side 10b and engaged in a groove 24 of this button. The button 21 has, from its side opposite to that projecting through the hole 22, a bore 25 in which is engaged a rod 26a of a pusher 26 guided in the casing 17 and accessible by a light 27 from this casing.

A compression spring 28 is interposed between the pusher 26 and the end of the low-cut part 21a of the button 21, this spring being chosen to have a stiffness greater than that of the compression spring 20 described in the foregoing.

The low-cut part 21a of the button 21 has holes 29 and 30 clearly visible in FIGS. 8 and 9, one side of which forms a ramp 29a, respectively, 30a. The hole 29 is axially aligned with the slide 13 and the hole 30 is aligned with a slide 30 whose function is explained in the following.

It is advantageous that the end of the slides 13 and 31 is conical, or oblique depending on their shape in section, to facilitate their cooperation with the ramps 29a and 30a. Likewise, the end of the rod 26a is conical or oblique as illustrated in 26₁ to form ramps which must cooperate with the slides 13 and 31 guided in the shoulder 14a of the shouldered bush 14.

The neck portion 21a of the button 21 delimits, on the latter, a shoulder 21b against which is fixed a plate 32 which extends over the major part of the height of the lock housing 10 inside of it as shown in particular fig. 3.

The means, described in the foregoing, constitute a confirmation and unlocking device intended to operate in correlation with combination assemblies 33 carried by the housing 10 and the plate 32. The combination assemblies 33 are identical to each other and their number may vary depending on the number of data that you wish to have to take into account to allow unlocking of the lock. In the example shown, four combination sets are illustrated so that the data set corresponds to a number of four digits.

Each combination assembly comprises a ring 34 rigidly connected to the plate 32 for supporting a core 35 formed from an external button 36. The core 35 and, consequently, the button 36, are held in place, on the one hand, by means of a flange 37 and, on the other hand, by means of a rod 38 bearing respectively on one and the other faces of the plate 32. The free face of the flange 37 comprises marks for example numbers or letters or other characteristic data the number of which corresponds to that of notches 39 (fig. 5) provided in the ring 34 and into which a ball or bolt 40 pushed by a spring 41 can enter enter.

The marks of the collar 37 are visible in their succession by lights 42 provided in the front side 10b of the housing 10.

The bolt device 40, spring 41 and notch 39 can be replaced by other indexing means, for example by a magnetic device, that is to say that an arc segment of the core 35 can have a polarity determined and that successive magnetic poles can be provided at the periphery of the ring 34 so that the core 35 can be brought to occupy well-defined angular positions corresponding to the marks on the flange 37.

The core 35 is extended, on its side opposite to that forming the outer button 36, by a low-cut body 43 engaged in a coaxial bore 44 of an inner button 45 projecting beyond the rear side 10a of the lock housing 10. The button 45 is mounted in the same way as the core 35 described in the foregoing, that is to say that it is engaged in a ring 34a identical to the ring 34 described in the foregoing in relation to FIG. 5 and having, as illustrated in FIG. 5, notches 40 or other indexing means cooperating with a ball or other lock 40.

Each inner button 45 comprises a collar 37a similar to the collar 37 of the external buttons 36 and bearing, like the latter, marks corresponding to those of said collar 37, namely numbers, letters or other data. The marks of the flange 37a can be seen independently of each other by lights 42a identical to the lights 42 but formed in the rear side 10a.

In addition to the above, the interior button 45 has a notch 46 intended to receive a finger 47 (FIG. 3) carried by the low-cut body 43 forming part of the exterior button 36. The bore 44 of the interior button 45 is advantageously closed by a tablet 48.

In the embodiment shown in FIGS. 2, 4 and 6 to 15, the lock device comprises a coin mechanism intended as a whole by the reference 49. The coin mechanism is controlled by a coin 50 of precise characteristics (weight and size) and by a sliding cam 51 in fig. 2, 4 and 6 to 9, This cam being rigidly connected to a sliding plate 52. The sliding cam 51 defines, opposite the slide 31, a stop range 53 followed by a notch 54, itself followed by a ramp 55 (fig . 4).

Apart from the coin mechanism 49, the lock operates as follows.

In the standby or open position, the lock members occupy the position illustrated in FIGS. 3 and 4, that is to say that the external buttons 36 are retracted into the housing 10 and the same is true of the bolt 4 so that the door 1 is open although it can be inscribed in the frame 2.

It is advantageous that the protective plate 8 has parts colored for example in green and in red, the part colored in green being visible by a window of the case when the bolt is retracted to indicate that the door 1 can be operated freely, for example to give access to a housing located behind said door and the red colored part visible when the bolt 4 is out.

When the user of the housing which can be closed by the door 1 wishes to lock the door, he opens it first, which gives access to the interior buttons 45 which are the only visible or at least the only ones which can be operated. The user forms a data combination by rotating the interior knobs 45 by an appropriate measure.

After establishing the combination, the user validates it by exerting a push on the pusher 26, the rod 26a begins to move the slides 13 and 31 through the conical end 26₁. This has the effect, as illustrated in Figs. 4 and 6, to move the bolt 4 along the arrow f₁ and the sliding cam 51 along the arrow f₂.

When the slides 13 and 31 occupy the position illustrated in FIG. 6, they bear against the ramps 29a, 30a delimiting one of the edges of the holes 29, 30. The action on the pusher 26 is transmitted to the low-cut part 21a of the button 21 by the spring 28 and, consequently, said button 21 is gradually pushed back outside the front side 10b of the housing 10.

The movement of the button 21, in the direction of the arrow f₃ (fig. 7 and 8), has the effect of simultaneously displacing the plate 32 which at the same time pushes the sliding cam 51 since said plate 32 slides along the ramp 55 .

The movement described above of the pusher 26 and the slide 13 had the effect of causing the bolt 4 to come out completely against the action of the spring 12 which is compressed.

When one ceases to exert a push on the pusher 26, the spring 28 can relax by returning the pusher to its initial position, which is illustrated in FIG. 8. This last movement has no influence on the position of the slider 13 and likewise on the position of the slider 31 since these members then rest on the surface of the low-cut part 21a of the button 21.

The slides 13 and 31 being free on the surface of the low-cut part 21a, the spring 20 of lesser stiffness can relax, which has the effect of moving the slides 13 and 31 away from the holes 29, 30.

At the position reached by the various organs, as illustrated in FIG. 8, the bolt 4 is completely extended so that the door 1 can be closed by slamming it, said bolt acting in a known manner on the elastic strike 5 which ensures its locking while the protective plate 8 prevents access to the strike is possible, this plate also showing the segment of red color.

When the door is closed, the interior buttons 45 are no longer accessible but the exterior buttons 36 protrude from the front side 10b of the lock housing 10 and can therefore be operated as well as the button 21 forming part of the confirmation device and unlocking.

It is remarkable to note, by referring for example to FIG. 3, that the external buttons 36 can be freely rotated without the combination established from the internal buttons 45 being able to be detected since, when the external buttons 36 are out, that is to say when the plate 32 which carries them has been brought to the vicinity of the front side 10a of the lock housing 10, as illustrated in FIG. 8, the pins 47 are very far from the notches 46 of the interior buttons.

The spring 20 being relaxed, the shoulder bush 14 is abutted by its shoulder 14a against the internal wall of the rear side 10a of the housing, which is illustrated in FIG. 8. Consequently, a push exerted on the unlocking button 21 cannot bring the holes 29, 30 in the plane of the slides 13 and 31 because a movement of the plate 32 would cause at least one of the lugs 47 to come up against against the rear face of the interior buttons 45 without producing any other effect than the partial compression of the spring 28 which would consequently then return said button 21 to its initial position.

On the other hand, if the user reproduces with the external buttons 36 the combination initially made with the internal buttons 45 then the pins 47 are brought into alignment with the notches 46. In this way, a push exerted on the unlocking button 21 makes it possible to move the plate 32 by a sufficient measure so that all the pins 47 enter the notch 46 which corresponds to them. The displacement of the button 21 is then sufficient for the holes 29a and 30a to be brought into the plane of the sliders 13 and 31 so that the spring 12 of the bolt 4 which is compressed pushes the slider 13 which, likewise the slider 31, between in holes 29 and 30 respectively. When one ceases to exert a push along the arrow f₃ on the button 21, the spring 28 pushes the low-cut part 21 and the shouldered ring 14 so that this ring comes to reoccupy the position illustrated in FIGS. 3 and 4. The spring 28, which is of greater stiffness than the spring 20, compresses the latter again. The movement in the opposite direction of the arrow f₃ of the button 21 and therefore the lacquer 32 has the effect of bringing out the pins 47 of the notches 46 so that the interior buttons 45 are again available to allow the creation of a new combination .

If the user loses the combination allowing the lock to be opened. it can then be opened by a competent authority having an appropriate key which is illustrated at 56 schematically in FIG. 3.

The lock is provided in the rear side 10a with a socket 57 immobilized by a locking ball 58 or other similar member made of a magnetic material. The socket 57 is provided with a combination cannon 59 which can be very complex which corresponds to the combination of a key 56 which is, moreover, provided with a magnetic tip 56a. In addition, the socket 57 comprises a cam 60 disposed opposite a ramp 61 of the shouldered socket 14. By inserting the key 56 into holes 62, 63 on the front side 10b and of the plate 32 respectively, the magnetic end piece 65a makes it possible to lift the locking ball 58 to make possible the rotation of the sleeve 57 by the key 56. The cam 60 thus has the effect of sliding the shouldered sleeve 14 towards the front side of the housing 10 and by pressing the button 21 the slides 13 and 31 can reoccupy the position illustrated in FIG. 4 for which the lock is open.

As explained in the foregoing, the combination lock device described may comprise in combination a coin operated assembly. This assembly comprises a frame 64 rigidly fixed to the housing 10 and on which are mounted slides 65 for the plate 52 described in the above which is thus guided axially as the sliding cam 51. The frame 64 supports for example as shown two fixed pins 66 and 67 engaged in buttonholes 68 and 69 of the plate 52, these two slots being of substantially equal length.

For its part, the plate 52 carries a finger 70 intended to slide in a first groove 71 of the housing 64 which has a second groove 72 in which is engaged the end of a pin 73 also engaged in an oblong slot 74 of the plate 52. The pin 73 is held by a spring 75 exerting an elastic action tending to make it slide in the direction of the arrow f₄, that is to say towards the lug 66. The length of the buttonholes 68, 69 and of the first and second grooves 71, 72 is the same while the length of the light oblong 74 is smaller for a reason which emerges from the description which follows.

The drawing shows that the plate 52 is constantly pushed by a spring 76 of any type intended to hold the sliding cam 51 against the slide 31. In addition to the above, the plate 52 defines a notch 77 having a front 78 and a ramp 79. A spring guy 80 or similar lock is carried by the frame 64 to cooperate with the top of the plate 52 which delimits the notch 77.

Fig. 4 shows that the frame 64 delimits a corridor 81 for guiding the coin 50 whose dimension characteristics are chosen so that this coin 50 is retained by the fixed lug 66 and the pin 73 located in the bottom of the oblong slot 74 (fig. 10) when the plate 52 and, consequently, the sliding cam 51 are pushed against the slide 31 while the lock device is in the open position and its members are placed in the manner illustrated by the fig. 4.

At the start of the closing of the lock, that is to say when the pusher 26 begins to cause the sliders 13 and 31 to move apart, the plate 52 is moved in the direction of the arrow f₅ (fig. 11) against the action of the spring 76. The buttonhole 68 is therefore moved relative to the fixed lug 66 and the same is true of the oblong slot 74. The pin 73 is consequently brought into the bottom of the oblong slot 74 and begins to be moved in the direction of the arrow f₅. If the part 50 corresponds in diameter view to the only part that can be used, it then intercepts the bottom of the notch 77 and the front 78 by forming thus a ramp for the spring guy 80 which is lifted by following the peripheral edge of the part while the plate 52 continues its movement along the arrow f₅.

If the part 50 did not have an excessive dimension or else it fell while passing between the lug 66 and the pin 73, in this case the spring guy 80 would abut against the front 78 or else it is the part itself which would constitute a stop for the spring guy 80. In either case the sliding cam 51 would be immobilized, which would prevent any sliding of the slider 31 and consequently would lock the lock in the open position.

When the plate 52 has been displaced by a sufficient measure along the arrow f₅, the pin 73 is displaced by a measure causing the part 50 to fall between these two latter members, which is illustrated in FIG. 12 which also shows that the part 50 illustrated in solid lines then comes to bear on the finger 70 and the fixed lug 67.

At the end of the closing of the lock, that is to say when the bolt 4 and the sliding cam 51 are in the position illustrated in FIG. 8, the part 50 is held on the fixed lug 67 and the finger 70 carried by the plate 52. In this position, the fixed lug 67 is located in the bottom of the buttonhole 69, while the finger 70 is in the opposite bottom of the first groove 71, the spring guy 80 then resting on the upper side of the plate 52.

When the lock is opened again after execution of the combination from the buttons outer 36 projecting from the front side 10b of the housing, the plate 52 is pushed by the spring 76 in the direction of the arrow f₆ (fig. 14) so that the spring guy 80 again falls into the notch 77 (fig .14) then this spring guy is gradually retracted when he follows the ramp 79 (fig. 15).

At the end of the return stroke along the arrow f₆ of the plate 52, the finger 70 carried by the plate is sufficiently spaced from the fixed lug 67 carried by the frame 64 so that the part 50 can fall below said plate 52 and be recovered either in a reserve box or directly by the user of the housing closed by door 1.

It goes without saying that the various constituent parts of the lock can be made of different materials, in particular in economical embodiments, for example when the lock is used for closing locker rooms or the like, the combination sets constituted by the buttons inside 45 and outside 36 as well as the button 21, shoulder bush 14 and others of the confirmation and unlocking device can be made of injected synthetic material to make possible mass production particularly economical although the security provided by the lock remains very satisfactory since the maneuvers achievable from the front side 10b of the housing do not make it possible to determine the combination made from the interior buttons and that the exterior buttons are retracted until the lock is closed.

The invention is not limited to the embodiments shown and described in detail, because various modifications can be made without departing from its scope. In particular, the lock can be implemented without the coin mechanism and, in this case, the slider 31, the sliding cam 51 and the means described above, specific to the coin mechanism, can be omitted. Similarly, the front side of the housing 10 can be extended by a flange 10₁ (FIG. 2) covering the rebate of the frame 2 to prevent any access to the bolt 4 and to the strike 5.

Claims (16)

Combination lock device in which a sequence of data forming a combination is entered by means of rotary knobs (45) before the actuation of a bolt in the direction for which said bolt is locked with strike, said combination to be reproduced for ensuring the unlocking of the bolt, characterized in that internal buttons (45) for data entry are carried by the rear side (10a) of a housing (10) containing a plate (32) supporting external buttons (36 ) complementary to the interior buttons (45), said plate (32) being carried by an unlocking button (21) guided in the front side (10b) of the housing (10) and in a socket (14) itself containing a pusher (26, 26a, 26₁) for the actuation of at least one slide (13, 31) passing through said unlocking button (21) and said socket (14) and bearing against the bolt (4, 11), so that said pusher (26) causes the displacement nt of the slide (13, 31), of the bolt (4) and of the plate (32) carrying the external buttons (36) complementary to the internal data entry buttons (45) by bringing this plate into a position for which organs (46, 47) for correlating the data entered by the interior buttons (45) and the data to be entered by the exterior buttons (36) are separated from each other, said unlocking button! 21) carrying the plate support (32) for the external buttons (36) being in turn made operable to move said plate (32) in the direction causing a new displacement of the bolt (4) when the external buttons (36) which it carries are brought into positions for which data entered by their maneuver correlates with the initial data combination of interior buttons (45) carried by the rear side (10a) of the housing (10). Device according to claim 1, characterized in that the members for correlating the data entered from the internal buttons carried by the rear side (10a) of the housing (10) and the data to be entered by the external buttons (36) for to make possible the unlocking of the lock respectively comprise notches (46) and fingers (47) formed from the internal wall of the interior buttons (45) and by a neckline (43) extending the exterior buttons (36) carried by the plate (32) supported by the locking button (21). Device according to either of Claims 1 and 2, characterized in that both the internal buttons (45) and the external buttons (36) carried by the plate (32) are provided with rings comprising complementary indexing means of the notch type (39) and spring ball (40), magnetic poles and the like. Device according to one of claims 1 to 3, characterized in that the interior buttons (45) as well as the exterior buttons (36) respectively comprise flanges (37a) for figurative marks of the data entered and to be entered and identifiable by lights (42, 42a) provided in the front (10b) and rear (10a) sides of the housing (10). Device according to one of claims 1 to 4, characterized in that the plate (32) for supporting the external buttons (36) is held by the unlocking button (21) which carries it in a position for which said external buttons ( 36) are at least partially retracted inside the housing (10) as long as the pusher (26) for actuating the slide (13) operating the bolt (4) has not been actuated. Device according to one of claims 1 to 5, characterized in that the pusher (26) is connected to the unlocking button (21) by a compression spring (28), and being provided with a push rod (26a) at the end conical (26₁) disposed opposite the slide (13, 31) passed through a hole (29, 30) of the unlocking button (21) and in the socket (14) guiding said unlocking button (21) when the latter is moved by the spring (28) which pushes it after displacement of the slide (13, 31) by the conical end (26₁). Device according to claim 6, characterized in that the hole (29, 30) for the passage of the slide (13, 31) has a ramp (29a, 30a) for the ejection of the end of the slide (13, 31) in a secondary ejection phase by the pusher (26) and the spring (28) and according to that caused initially by the conical end (26₁) of the same pusher (26). Device according to one of claims 6 or 7, characterized by a spring (20) interposed between the housing (10) and a ring (16) extending the sleeve (14) for guiding the unlocking button (21), said spring ( 20) being of lower stiffness than the stiffness of the spring (28) interposed between the pusher (26) and said unlocking button (21) so that said spring (20) of lower stiffness moves the bush (14) to bring a shoulder (14a) of the latter against the rear side (10a) of the housing (10) after ejection of the slide (12, 31) from the passage hole (29, 30) with ramp (29a, 30a) of said unlocking button (21), so that the slide (13, 31) is brought to a position for which the ramp hole (29, 30) (29a, 30a) can no longer be brought into the plane which it occupies as long as the unlocking button (21) cannot be displaced by a sufficient measure so that the plate (32) which it carries brings the fingers (47) and notches (46) in coincidence c that is to say after entering the combination of data from the external buttons (36) carried by said plate (32). Device according to one of claims 1 to 8, characterized in that the shoulder bush (14) guiding the unlocking button (21) is provided with a second slide (31) also controlled by the conical end (26₁ ) of the pusher (26) and disposed opposite a sliding cam (51) forming part of a coin mechanism (49). Device according to one of claims 1 to 9, characterized in that the bolt (4) is pushed by a spring (12) against the slide (13) so that said bolt is retracted as long as the slide (13) and the slide (31) of the coin mechanism are not pushed back by the pusher (26, 26a, 26₁), the sliding cam (51) of the coin mechanism forming a blocker for the slide (31) which actuates it when a coin is used (50) inappropriate in said coin mechanism. Device according to one of claims 1 to 10, characterized in that the bolt (4) of the lock cooperates with a keeper (5) of the spring type. Device according to one of claims 1 to 11, characterized in that it is provided with at least one protective plate (8, 10₁) of the bolt (4). Device according to one of claims 1 to 12, characterized in that the coin mechanism comprises a frame (64) carried by the housing (10), said frame being provided with guides (65) for a plate (52) rigidly connected to the sliding cam (51), said plate (52) having a first buttonhole (68) aligned with an oblong opening (74), said buttonhole (68) containing a fixed lug carried by the frame (64) and the oblong opening (74) containing a pin (73) carried by a spring (75), so that a part (50) engaged between the frame (64) and the plate (52) bears first against said lug (66) and said pin (73) during a first movement of movement of the plate (52) caused by the sliding cam (51) under the action of the slide (31), said part (50) forming, by its periphery, a cam for lifting of a spring guy (41) brought into a notch (77) of said plate (52) and held therein in the absence of the part ( 50) which forms a cam for crossing a front (78) bordering the notch (77) so that the dimension of the part is checked before complete ejection of the slide (31) actuated by the pusher (26) of the lock. Device according to one of claims 1 to 13, characterized in that the coin mechanism delimits in the plate (52) moved by the sliding cam (51) a lumen for one end of the pin (73) carried elastically so that said pin is separated by the bottom of said lumen of the fixed lug (66) to allow the movement of the part (50) after a second part of stroke of the coin plate (52). Device according to one of claims 1 to 14, characterized in that the coin mechanism comprises a fixed lug (67) and a finger (70) arranged to receive the part (50) as long as the plate (52) moved by the sliding cam (51) is not returned to its initial position by actuation of the unlocking button (21) causing the retraction of the slides (13, 31) after the correlation members of the data entered and to be entered. Combination lock device substantially as described and shown in the accompanying drawings.

Images