FR2604206A1 - KEY FOR LOCK AND APPARATUS FOR CONDEMNATION THEREFOR. - Google Patents

Abstract

CONDEMNATION APPARATUS. THE KEY FOR A LOCK IN ACCORDANCE WITH THE INVENTION IS CHARACTERIZED IN THAT IT CONTAINS A TUBULAR INSERTION SOCKET 25 OPEN AT ITS INSERTION END 26 AND CONTAINING A MOBILE PISTON 29 REQUESTED BY A SPRING 30 MOVING AGAINST A STOP OF ' EXTENSION 31 PRESENTED BY THE FUT AND INTENDED TO COOPERATE WITH, ON THE ONE HAND, A RETRACTION STOP 33 CARRIED BY THE FUT AND, ON THE OTHER HAND, A STOP 15 PROVIDED IN THE FOUILLOT 14 OF THE BARREL. APPLICATION TO LOCKS OF THE ROTATING BARREL TYPE.

Description

LOCK KEY AND CONDEMNATION APPARATUS USING THE SAME

  The present invention relates to the keys locks and locking devices implemented to control the movement of at least one bolt or a bit provided to immobilize or release a movable panel relative to a

fixed frame.

  The technical field concerned is that of barrel type locking apparatus rotating inside a cylindrical body with respect to which it can be immobilized by means of locking members of the pump or flake type. The cylindrical body of such devices has a front entry allowing the insertion of a key having means able to control locking members accessible from a fuse in the barrel coaxially at the entrance of the

cylindrical body.

  The insertion of the key makes it possible either to retract the movable locking members or to place them in a predetermined position in which the barrel is free of

  rotate relative to the cylindrical body.

  The effective and safe locking that can be provided by such devices is, essentially, attached to the additional physical characteristics between the control key and the movable locking members. The physical characteristics may depend on the position, shape and relative height of aligned teeth, particularly in the case of flakes or the shape, orientation and length of radial ribs controlling complementary length. In all cases, the insertion position, making it possible to obtain the concordance of the complementary elements with a view to erasing the movable locking members or to moving them in the predetermined unlocking position, is defined by bringing it into abutment. of the key inserted inside the

follower of the barrel.

2 2604206

  This predetermined stop position does not correspond to a particularly satisfactory safety factor, since a picking attempt can be made from this reference position accessible through the front entrance of the

lock.

  Although satisfactory, in terms of combinations that can be conferred complementary to the lock and the key, it should be noted, in addition, that the mechanisms of the above type are limited in the possibility of codification, because of the necessarily restricted number of movable locking members that can be implemented in the two cases of construction mentioned above and also because of the limitation of the dimensional characteristics

  different that can be conferred on each of them.

  In all, therefore, locking devices of the above type need to be perfected to satisfy a need for closure and condemnation effective and safe from technical means offering a great possibility of multiple codification

  to statistically decrease a possibility of picking.

  It is an object of the invention to respond to this dual objective by proposing a new key for a lock and a locking device consisting of a lock comprising means complementary to those worn by the new key according to the invention. The improvements according to the present invention are directed to the locking mechanisms of the cylindrical body and rotating barrel type, whatever the conformation of the organs of the invention.

  interlocking between them.

  In other words, the object of the invention concerns barrel type locking mechanisms whose movable locking members are, indifferently, constituted by pumps, by pumps and counterpumps, or even by flakes. . To achieve the above objectives, the invention proposes a new lock key of the type comprising a 6 uV tubular cylindrical ivo body having a front opening or entry for the insertion of a key and containing a rotating barrel capable of controlling at least a locking bolt and defining a key insertion nut, coaxial with the facade opening and in which partially projecting mobile locking members, elastically servocontrolled and interposed between the barrel and the body, key comprising a operating head and an insertion shaft forming projections intended to be introduced into the follower through the front opening to unlock the movable locking members, a key characterized in that it comprises a tubular insertion shaft , open at its insertion end and containing a movable piston biased by a spring moving against an extension stop close to entered by the shaft and intended to cooperate with, on the one hand, a retraction abutment carried by the shaft and, on the other hand,

  a stop stop provided in the barrel follower.

  The invention also relates to a locking device comprising, on the one hand, a lock of the barrel type and, on the other hand, a key comprising an operating head and an insertion barrel forming projections intended to be introduced into the barrel follower, characterized in that: - the lock is provided with a stopper provided inside the barrel follower, - and the key has a tubular insertion shaft, open at its end insertion and containing a movable piston biased by a spring in displacement against an extension stop presented by the barrel and intended to cooperate with, on the one hand, a retraction abutment carried by the barrel and, on the other hand, with the stopper when said barrel is inserted into the follower at

through the front entrance.

  Various other features emerge from the

  description given below with reference to the accompanying drawings which

  show, by way of non-limiting examples, forms of

  accomplishment of the object of the invention. -

  Fig. 1 is a sectional elevation, partly broken away, of a key for a lock and a complementary lock according to the invention. Fig. 2 is a cut-elevation, similar to FIG. 1

  but illustrating the key and the lock in cooperation position.

  Figs. 3 and 4, on the one hand, and 5 and 6, on the other hand, are elevation cuts showing alternative embodiments

  in the same characteristic positions as fig. 1 and 2.

  According to the invention, the lock key, designated as a whole by the reference I, is of the type intended to actuate a mechanical lock II comprising a cylindrical body 1 made of metal and intended to be placed in a housing provided in a housing. panel 2 such, in particular, that a door. The housing has, for example, a constant diameter from the front 3 and has, on the rear face 4, a flat surface for fastening the body 1, for example by a screwed flange 5. A different mode of attachment could, of course, be reserved, depending on particular cases of applications without this intervening, one way or another, on the object of the invention. The cylindrical body 1 delimits, internally, a bore 7 reserved for mounting a barrel 8 of the rotating type. In the exemplary embodiment illustrated in FIGS. 1 and 2, the barrel 8 is provided on its rear face, a polygonal trainer 9 for driving a bolt or bit, not shown, sliding or rotating character. The cylinder 8 is immobilized in the bore 7, for example, by means of a rear plate and a snap ring 11 cooperating with a groove formed in the

cylindrical body 1.

  The cylindrical body 1 comprises, in its front 12, an input 13 conformation complementary to that of the key I. The inlet 13 is arranged coaxially with a fouilot 14 presented by the barrel 8. In the example illustrated in the drawings, the fouilot 14 is limited by a bottom 15 and communicates with cylindrical housings 16 drilled at the periphery of the barrel 8 in a number determined by being equidistant angularly. As

  For example, the barrel 8 may comprise five housings 16.

  In the example of construction shown, the housings 16 OS contain pumps 17 each urged by a spring 18 to be held in abutment against the inner face of the facade 12. Each pump 17 has a lug 19 projecting into the follower 14, in order to be able to be attacked by a complementary member of the cable I. In the illustrated example, the pumps 17 are intended to cooperate with at least one funcet 20 maintained in the bore 7 pcLur cet-nturer the barrel 8. Each pump 17 has a groove, a groove or a transverse notch 21 whose passage cross section is equal, with clearance, to that of the projections of the funct 20. The position of the notch 21 of each pump 17 is determined according to a law codification, so that the introduction of the key I allows to repel, simultaneously, all the pumps 17 and at the same time bring the notches 21 in the plane of the funcet 20 to allow rotation in one direction or in the at nother

  of the cylinder 8 with respect to the cylindrical body 1.

  The key I, complementary to the lock II described above, comprises an operating head and an insertion barrel 25 having, recessed from its insertion end 26, moldings or ribs 27 having the same angular distribution as The pumps 17 that they are responsible for controlling. The coding law of the notches 21 of the pumps 17 is additionally transferred to the ribs or moldings 27 so that, through them, the simultaneous actuation, as described above, can take place when the drum 25 is inserted into the

  follower 14 through the entrance 13.

  It must be considered that the example described above is in no way limiting and that the object of the invention, as described below, can be implemented for rotary barrel type locking apparatus provided with locking members consisting of pumps and counter-pumps or,

still, by glitter.

  According to the invention, the key I is made to have an open tubular insertion shaft from its insertion end 26. The tubular insertion shaft 25 delimits os05 a cylindrical bore 28 in which is slidably mounted a piston 29 which is biased, by means of an elastic member 30, in radial displacement against an extension stop 31. In the example illustrated, the stop 31 is constituted by a ferrule attached in the bore 28 to limit the section of this

  last substantially in the plane of the end 26.

  According to the invention, the piston 29 is designed to cooperate, during the insertion of the key I into the follower 14, with the bottom 15 of the follower, which constitutes a stop stop limiting the introduction or the insertion of the barrel 25. To cooperate with this stopper, the piston 29 has, in one embodiment, a needle 32 projecting from the end 26 under the action of the elastic member 30. Moreover, according to the invention, the piston 29, considered as a whole, that is to say including the needle 32, has an axial length chosen so that, during insertion, it is brought to cooperate positively with a retraction stop 33 delimited, for example, by a shoulder of

the cylindrical bore 28.

  When inserted, as shown in fig. 2, the shaft 25 is engaged through the inlet 13 to enter the follower 14 until the piston 29, considered as a whole, cooperates with the stopper 15. In this position, the movement of key insertion is continued so as to push the piston 29 against the action of the organ

  elastic 30 and bring the piston against the retraction abutment 33.

  In this position, the insertion shaft 25 occupies a determined position inside the follower 14, in which position the moldings or ribs 27 have pushed the pumps 17 into the alignment position of the notches 21 with the plane

of the funcet 20.

  Thus, by the play of the axial dimensions between the abutment stop 15, the piston 29 and the retraction abutment 33, it becomes possible to precisely determine the actual position of cooperation of the key I to actuate the pumps 17, without which it is necessary to carry out for this the bringing into positive abutment of

  the insertion end 26 with the stopper 15.

  By stacking the axial dimensions, it thus becomes possible to determine an immaterial actuation position making it much more difficult to open the door.

  fraudulent through the current means.

  In addition to this safety feature, it should be considered that the wide variety of axial dimensions that can be interposed between the stopper 15 and the retraction stop 33, via the piston 29 as a whole, makes it possible to increase very significantly, the possibilities of coding from the ranges offered by the different dimensional characteristics that can be conferred, on the one hand, pumps 17 or the like and, on the other hand, the ribs or moldings 27. FIGS. 3 and 4 illustrate an alternative embodiment in which the piston 29 and the insertion shaft 25 are made so that the piston is entirely disposed inside the bore 28 in its stable rest position against the stop of extension 31 under the action of the elastic member 30. In such a case, the extension stop 31 is formed by an internal shoulder of the bore 28 which is then made from the rear end of the barrel 25 to allow the mounting of the piston 29. In such a case, the retraction abutment 33 is constituted by a plug 34

closing the bore 28.

  In such an exemplary embodiment, it is then advantageous to make the stopper 15 in the form of a projection 35 delimiting a blind bore 36 intended to cooperate with

the needle 32 of the piston 29.

  As before, the stacking of the axial dimensions makes it possible to determine an immaterial actuation position and

  to increase the possibilities of codification.

  An alternative embodiment is illustrated in FIGS. 5 and 6 in which the piston 29 has, in place of the needle 32 and from its corresponding transverse face, a conical type seat 37 intended to cooperate with a complementary surface 38 which is formed by the projection 35. the above advantages, this conformation makes it almost impossible to determine the reference plane of the abutment 35 and to deduce, by any possible approximation, the reference intangible position for the simultaneous actuation of the pumps.

17.

  In this embodiment, the insertion barrel 25, as well as the bore 28, provide a conformation substantially

identical to that of fig. 1.

  Figs. 5 and 6 show, additionally, another possible embodiment consisting in making the piston 29 comprise a radially-oriented heel 39, engaged in a smooth sliding inside an axial slot 40 presented by the insertion shaft to from its insertion end 26. The heel 39 is intended to cause the retraction of a secondary locking member consisting of a pin 41 mounted to slide in a radial direction in the barrel 8 and cooperating with a counter-pin 42 mounted in the thickness of the cylindrical body 1, in a coaxial bore closed by a plug 43 retaining an elastic member 44. Under the action of the elastic member 44, the counter-pin 42 is engaged through the interface between the 7 bore and the cylinder 8 and helps to angularly immobilize it. The heel 39 is designed so that when the barrel 25 occupies the immaterial actuation position defined by the stacking of the dimensions between the stopper 15, the piston 29 and the retraction abutment 33, it pushes the stud 41, in such a way that the joint plane between the latter and the counter-pin 42 is placed in coincidence with the interface between the bore 7 and the

barrel 8.

  This arrangement makes it possible to further increase the possibilities of coding and to increase the safety factor

of the conviction.

  The invention is not limited to the examples described and shown, since various modifications can be made without departing from its scope. In particular, it may be envisaged to constitute the projection 35 in the form of an axially movable pin

  between two reference positions.

Claims (11)

CLAIMS:   1 - Lock key of the type comprising a tubular cylindrical body (1) having a front opening or entry (13) for the insertion of a key (I) and containing a rotary barrel (8) capable of controlling at least one locking bolt and defining a follower (14) for inserting a key, coaxial with the front opening and in which partially projecting movable locking members (17) slaved elastically and interposed between the barrel and the body , key comprising an operating head and an insertion shaft (25) forming projections (27) intended to be introduced into the follower through the front opening to unlock the movable locking elements, key characterized in that it comprises a tubular insertion shaft (25) open at its insertion end (26) and containing a movable piston (29) biased by a spring (30) moving against an extension stop (31) presented by the shaft , and intended to cooperate with, on the one hand, a retraction abutment (33) carried by the shaft and, on the other hand, an abutment   stop (15) provided in the follower (14) of the barrel.   2 - key lock according to claim 1, characterized in that the piston (29) has a length less than that of the insertion shaft and is entirely disposed inside the barrel in a stable position of rest against the extension stop.   3 - key for lock according to claim 1 or 2, characterized in that the piston (29) has a radial heel (39) engaged and permanently guided in an axial slot (40) presented by the shaft (25) from its insertion end (26), said heel being intended to actuate a secondary locking stud (41) mounted sliding radially between the cylinder and the cylinder and biased by a spring (44) to partially project into the follower (14).   4 - Key for lock according to one of claims 1 to   3, characterized in that the movable piston (29) comprises, from its transverse face oriented towards the insertion end of the barrel, a coaxial needle (32) intended to cooperate with a blind bore (36) of The stop (35) of the follower (14).   5 - Key for lock according to one of claims 1 to   3, characterized in that the movable piston (29) has, in its transverse face facing the insertion end of the barrel, a seat (37) of generally conical shape, intended to cooperate with a complementary bearing (38) presented by the stop (35) of the follower.   6 - Locking apparatus comprising, firstly, a lock of the type comprising a tubular cylindrical body having a front opening or entry (13) for the insertion of a key (I) and containing a rotating barrel (8) adapted to control at least one locking bolt and defining a nut (14) for insertion of a key, coaxial with the front opening and in which partially projecting movable locking members (17) slaved and interposed between the barrel and the body and, secondly, a key comprising an operating head and an insertion shaft (25) forming projections (27) to be introduced into the follower through the front opening to unlocking the movable locking members, characterized in that: - the lock (II) is provided with a stop (15) provided inside the follower (14) of the barrel (8), - and the key (I) has a tubular insertion shaft (25), or green at its insertion end (26) and containing a movable piston (29) biased by a spring (30) moving against an extension stop (31) presented by the barrel, and intended to cooperate with, a on the one hand, a retraction abutment (33) carried by the barrel and, on the other hand, with the stopper (15) when said barrel is inserted into   the follower through the front entrance.   7 - Locking device according to claim 6, characterized in that it comprises a lock (II) and a key (I) having a piston (29) having a length less than that of the insertion barrel (25) and being fully disposed within the barrel in a stable rest position against the extension stop (31), when the barrel is not inserted into the follower lock cylinder.   8 - Locking device according to claim 6 or 7, characterized in that it comprises: - a lock (II) comprising, between the barrel (8) and the cylinder (1), a secondary locking device consisting of a pin (41) sliding radially in the barrel in the nut from which it projects and by a counter-stick (42) elastically slidable and sliding radially in the cylinder coaxially with the finger, - and a key (I) whose movable piston (29) of the insertion barrel comprises a radial heel (39) engaged and permanently guided in an axial slot (40) presented by the barrel (25) from its insertion end (26), said heel being intended to actuate the sliding nipple retracting unlocking in position insertion into the follower.   9 - Conviction apparatus according to one of   Claims 6 to 8, characterized in that it comprises:   - A lock (II) comprising a cylinder (8) defining a follower (14) of insertion from the bottom (15) which is formed an axial stop (35) having a blind axial bore (36), - and a key (I) whose movable piston (29) of the insertion drum (25) comprises, from its transverse face oriented towards the insertion end of the barrel, an axial needle (32) intended to cooperate with the one-eyed bore of the stop stop.   10 - Conviction apparatus according to one of   Claims 6 to 8, characterized in that it comprises:   - a lock (II) comprising a cylinder (8) defining an insertion nut (14) from the bottom (15) of which is formed an axial stop (35) having a conical bearing surface (38), - and a key (I) whose movable piston (29) of the insertion shaft (25) comprises, in its face facing the insertion end of the shaft, a seat (37) complementary to the scope.   11 - Conviction apparatus according to one of the   Claims 6 to 10, characterized in that it comprises a lock   whose stopper is constituted by an axially movable pin between two stop positions.